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M855 review.

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Thread replies: 240
Thread images: 35

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The M855 is one of the most common 5.56 NATO rounds in production. Why does this round garner so much hate?

>It doesn't frag!
Yeah, out of your 10.5in snowflake SBR.
>It's inaccurate!
Marines can hit shit at 500M. Get good faggot.
>It's dirty!
ANY military ammo is dirty. Clean your rifle faggot.
>M193 is better!
M193 has the same fragmentation as M855, but can't penetrate cover as well.
Why does /k/ shit on this round?
>>
>>32455949

M855 is better at penetrating general cover, but M193 can punch through steel plates.
>>
>it's the guy who owns a ST-15 and couldn't even post links properly again
>>
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>>32455949
as a hippy I like m855 because its good for the environment.
>>
>>32455949
It kills little kids.
>>
>>32455992
That'd be m855a1.
M855 still has lead.
>>
>>32455987
>Its the faggot that posted no evidence!
www.thetruthaboutguns.com
>>
>>32455949
>Why does /k/ shit on this round?
It can't be bought at Walmart for .0001 cents per round.
>>
I have a couple thousand rounds of it, I shoot hogs with it once in a while. Works fine.
>>
>less effective than soft/ballistic tip .223/5.56 for HD
>more expensive than other brass cased plinking ammo despite being milsurp
>only thing it does better is penetrate intermediate barriers
>can't be shot at indoor ranges

doesn't really fit a niche that I have a need for.
>>
>>32455949
>Marines can hit shit at 500M. Get good faggot.

Marines are shitty marksmen. I personally did testing on this round with a bolt action match rifle in 5.56. Under absolute perfect conditions M855 averaged 5.5" groups at 200m.
>>
>>32455949
I bet you also think the M16A2 was anot improvement over the A1.
>>
>>32455992
lead isn't bad for the environment. just for you.
>>
>>32455949
It's worse in every way that matters.

https://www.full30.com/video/071df094616cf8c4e2c1bbcd6be59728
>>
>>32456089
>I think Rangers are special forces the post.
>>
>>32456092
>Heavy barrel.
>Better sights.
>Stronger construction.
>Sights that don't need a tool.
Yeah its shit.
>>
>>32456106
>InRangeTV.
https://www.google.com/amp/www.thetruthaboutguns.com/2015/03/foghorn/the-truth-about-m855-5-56-nato-ammunition/amp/?client=ms-android-americamovil-us
>>
>>32456110
The only reason I tested it was because someone was offering $50 to anyone who could shoot a sub 5" group at 200m with m855 on video. I had gotten 2" groups at 100m so I gave it a go. I tried all fucking day and my best was 5.5". And that's with my competition rifle.
>>
>>32456200
https://www.shootingillustrated.com/articles/2012/9/4/green-tip-accuracy-test/
>>
>>32456089
>Marines are shitty marksmen
Why would you even say something like this?
>>
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The M855 is ment to be fired from a 20" barrel. When done so, it fragments better than a M193.
>>
The first clue people don't know what the fuck they're talking about is they throw around the term M193 as if it represents any sort of standard manufacturers adhere to.
>>
>>32456089

>the only branch that quals at 500m are shitty marksmen.
>>
>>32455968
>M855 is better at penetrating general cover, but M193 can punch through steel plates.

Take a moment and think about what you just posted.

Wouldn't punching though plates of greater density of most earthen cover be considered the same thing?
>>
>>32456322
The XM designation DOES NOT EXIST.
The M193 was the 55gr 5.56 that was replaced by the SS109 aka M855.
>>
>>32456338
No. The M193 dumps all it's energy. Its PSI is higher due to its.
>small diameter.
>high velocity.
You can see the M193 velocity drops faster than the M855.
>>
>>32456129
>heavier barrel for no increase in accuracy, just weight (and that came to be because the Ordnance Dept. was retarded and thought carbon buildup was actually barrel warping)
>more fragile and complex, extra adjustment is useless in actual combat
>reinforced in already non-critical areas; again, more unnecessary weight
>see above

The A2 got fat and complicated for no real gain. Plus lolburstcam.
The only thing it did right was the modified birdcage and round handguard. Everything else was just bureaucratic bullshit that bloated an otherwise fine rifle.
>>
>>32456357
M193 means fuck all.
>>
>>32456391
This is why taking dumb dumbs on /k/ is wrong.

>Better rear sight
>Better front sight
>Better barrel
>>
>>32456147
>when your own source says the round has issues fragmenting
Wew
>>
>>32455949
Why do we care about the performance of this load as civilians when we can use much better ones? M855 and M193 and for wasting at the range.
>>
>>32456443
You are arguably right with rearsight but you're a fucking retard if the other two are any indication. The frontsight for the A2 isn't any better and its barrel gives you no gain. Not the guy you are replying to either.
>>
>>32456470
Front sight A1-5 prong rounded edge
Front sight A2- 4 round blocked edge
Rear sight A1- needs round or tool to make adjustments
Rear sight A2-Needs no tools
Barrel A1- thin profile, 1-12 twist
Barrel A2- thicker profile 1-7 twist
>>
>>32456470
t. person who picks guns over how they look and not how they perform.
>>
>>32456494
>>32456500
Oh, you're trolling. Carry on.
>>
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>>32456527
>States the facts
>You must be trolling! How dare you prove me wrong!

Somebody get this hothead out of here.
>>
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>>32456458
>when your M193 can't penetrate cover the bad guy hides behind.
WEW LAD.
>>
>>32456254
Because the requirement to qualify with a rifle for a marine is "land a hit on a 8moa target once at 400m and you're good to go!"
>>
>>32456330
Every military branch is full of shitty marksmen.
>>
>>32455949

Would M855 or M193 be better when the SHTF?
>>
>>32455949
>ANY military ammo is dirty

ANY DI rifle is dirty
>>
>>32456286
Another reason for me to continue my 20" Hbar build.
>>
>>32456668
>it's the 'AR-15 is a DI rifle!' meme again
>>
>>32456638

neither really, both were replaced for reasons
>>
>>32456494
>A1 front sight needs bullet/tool to adjust
>A2 front sight needs bullet/tool to adjust
>A1 rear sight has close/far peep sights
>A2 has graduated increments out to 600meters that is only practical on the Muhreens firing ranges where there is known distances
>A1 has perfect length stock and pg
>A2 has retardedly long stock with very uncomfortable pg

other than the round handguards and making the plastic out of better material with the 1/7 twist rate, the A2 is a failure all because the Marines wanted to bring a target rifle into the combat zone
>>
>>32456089
Marines are mostly big liars and braggers. They exaggerate every small feat and their capabilities.
>>
>>32455949
Wait, are we talking about actual M855 or M855A1?
>>
>>32456706

But if you were only given the choice between the two, which would you use?
>>
>>32456720

M855 out of a 1/7 barrel
M193 out of a 1/9 barrel

Brand I'd use is the IMI shit as it seems to be some of the most hot loaded stuff as far as M855/M193 goes
>>
>>32456736
I always thought that was cheap shit hmm
>>
>>32456600
>Army.
>Shoot 24 MOA at 300M
>Marines 20MOA at 500M
>Marines suck!
It's good along with SAPR you guys get Mental Gymnastics from our liberal overlords.
>>
>>32456588
>m855 goes through barriers better
"what everyone fucking knows already" for $400, alex.
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>>32456687
I have a DI AR-15, and it's a dirty gun no matter what ammo I run through. I'm not saying that it compromises the rifle, she'll eat anything and keep on rolling, but it is a dirtier than piston driven platforms that I own. Stop calling everything a meme faggot.
>>
>>32456494
>this is better because reasons
'kay.
>>
>>32455992
what is that picture from it looks vaguely familiar
>>
>>32456789
>I have a DI AR-15
They've never made a DI AR-15. What you have is an internal inline piston design aka Stoner gas rifle.
>>
>>32456789
DI ARs don't exist, the gas system only superficially resembles DI. All guns are dirty because of chamber blowback. The gas from the gas system is vented long before the gun opens.
>>
>>32456600

found the retard. Marines don't even shoot at 400.
>>
>>32456677
20" master race. As Marine can confirm.
>Riding in Humvee.
>M16 is awkward.
>On bumps it hits my chin.
>.ragejpg
>take fire.
>driver goes off road.
>bumpbumpBUMP.
>stop.
>get out mad as fuck.
>put my lady's pussy on ragheads face.
>HEADSHOT.
>>
>>32456338
>dirt, wood and steel all absorb kinetic energy the same
>>
>>32456824
>put my lady's pussy on ragheads face.
The fuck does this even mean?
>>
Everything you need to know about OP and his retardation; http://desuarchive.org/k/thread/32424603/#q32429759

Highlights include;
>M855 is the best 5.56 round, period
>POI = accuracy
>Eotech and grippods are greats because the USMC approved them
>I don't plan on engaging anyone beyond 100y, so my 16" carbine w/ M855 is just fine
>Mixed combat loadouts
>I use M855 for "urban pacification"
and anti armor use.
>No, I won't read my own links that say M855 is only really better at barrier penetration, but trust me when I say they prove M193 a shit.
>Speaking of links, how do I into proper linking?
>>
>>32456823
My bad. Turns out all they require is that you land 76% of your shots at 9MOA stationary targets.

Even worse than I imagined.

>hurr durr they shoot at 500m though they are excellent marksmen
>>
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>>32456809
>I'm going to get overly technical while not really making a point

Your average AR-15 is a direct impingement rifle. Call it whatever you want, but it uses gas to push back the BCG rather than gas pushing a piston, which ultimately pushes back the BCG. That means more fouling ends up in the receiver. That doesn't mean that the gun can't take it, it just means that it's dirtier. Stop being a know-it-all faggot.
>>
>>32456850
Never shot ACOG?
>>
>>32456872
Stop knowing nothing because nothing you say is correct.
>>
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>>32456856
http://desuarchive.org/k/thread/32424603/#32436833
>>
>>32456856
>Never post evidence.
>hurr OP is retarded!
>still no evidence.
>hurr OP can't post!
>STILL NO EVIDENCE.
kys.
>>
>>32456865

>proven to not know what he is talking about.
>still expects people to take him seriously.
>>
>>32455949

>get good faggot

Rhetorical question:

How can I "get good" if a rifle/ammo combo is mechanically capable of only 4-5moa? I will never be able to improve past that, or at least never be able to tell if I have. Literally, you're using nugget owner logic here
>>
>>32456856
Holy fuck
>>
>>32456905
>Posts review of 1.5 MOA groups.
>o..Only 5 MOA!
Dude you suck. Get over it.
>>
>>32456883
https://www.sigsauer.com/store/sigm400-classic.html

https://danieldefense.com/daniel-defense-m4a1.html

https://www.lwrci.com/p-839-lwrci-di.aspx

Literally every manufacturer disagrees with you.
>>
>>32455949
>Why does /k/ shit on this round?
because ballistics gel
bullets are suppose to be designed to destroy ballistics gel as efficiently as possible and if it sucks against gelatin you're a sissy for using it instead of a MAGNUM bullet like a real man
>>
>>32456950
They're wrong too. It's not direct impingement. It's a unique gas system. You've never seen an actual direct impingement rifle, have you? Even so, you still don't know how the AR works because you think the gas system provides 'extra fouling' when the waste gas is vented out of the bolt carrier through the ejection port.
>>
>>32456904
You're still arguing that marines are good marksman?

The military doesn't even teach the kind of marskmanship I was talking about. There's no need for it outside of HTI. Humans are really big fucking targets and combat accuracy isn't hard.
>>
>>32456824

only huge downside to m16 is putting stock over shoulder to clear rooms because its so fucking long

its a big long black dick and it shoots hot loads all over the faces of mountain apes
>>
>>32456856
>POST NO EVIDENCE.
Pic related for the butthurt.
>>
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>>32456129
>Heavy barrel.
>>
>>32456901
>>32457012
>replying twice to the same post
This is some advanced autism
>>
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>>32456950
>appeal to authority
KEK fuck off kid
>>
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>>32456856
>I use M855 for "urban pacification" and anti armor use.
anybody gonna tell OP or should I?
>>
>>32457076
>post AR500.
>Cops use AR500.
>Nog's use AR500.
WEW.
>>
>>32457091
your round can't even go through fucking ar500 and you're trying this hard to defend it? if defeating armor doesn't matter, why the fuck did you say you used 855 for anti-armor use? what is wrong with you? were you dropped as a child?
>>
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>>32457112
>defeats poly.
>defeats ceramic.
Defeating 2/3 types of armor is pretty good.
>M193 only defeats AR500.
>/k/ hates AR500.
>BEST ROUND EVHA!
/k/ is full of the saddest retards. The retards who think their smart.
>>
>>32457112
He's only interested in defeating soft armor, which apparently only M855 can do.
>>
>>32456808
It's from the board game path finder.
>>
>>32456089
that's good enough for combat
it's also good enough for self defense
any protests are from ignorant plebs
>>
>>32457138
>defeats ceramic.
https://youtu.be/T2qP8LapTW0?t=130
fuck this retard circus, i'm out. nice airsofter-tier AR btw, you manchild faggot.
>>
>>32457241
>No repeat hits.
WOW WHAT CERAMIC ARMOR IS MADE FOR.
>Spikes Tactical
>airsoft tier.
HAHAHAHAHAHA!
>>
>>32455949
Because it sucks?

SBRs are the current trend, and other ammo choices offer better performance.

Again, its accurate enough, but again there are better options.

Any ammo is going to be dirty to some extent, no complaints there.

M193 has more reliable tumbling, and even penetration in certain conditions.

M855's biggest draw is that it is common and fairly cheap. Its fine for plinking.

>>32456092
>>32456129
Yes, lets make a lightweight rifle heavier, by adding weight in a place that adds no benefit. Had the added thickness been at the base of the barrel, I could say that it made for a good heatsink for rapid fire. Adding material at the other end, forward of the gas block/FSB does what, exactly? I understand it was to prevent barrel bending from heavy bayonet use, but wouldn't the barrel just bend at the thinnest point anyway?

The sights are a mixed bag, The easy adjust is nice, but comes at the cost of complexity. The A2 aperture is an improvement.

Three round burst is of dubious use.

The sturdier plastic furniture would have made its way there eventually anyway. The slightly extended stock is just enough to make it uncomfortable for a lot of shooters.

>>32456286
And how many 20 inch barrels do you see anymore? Or even 18 inch barrels? Hell, the only reason you see 16 inch is because of NFA, otherwise 14.5 would be king.

Thats not to say longer barrels aren't good, just that they have become a niche tool. The consensus has shifted to that of a more compact weapon being more favorable than something long and unwieldy, even if that comes at the expense of range.
>>
>>32457397
>forward of the gas block/FSB does what, exactly?
It does nothing.
>>
>>32457397
> I understand it was to prevent barrel bending from heavy bayonet use, but wouldn't the barrel just bend at the thinnest point anyway?

Congrats, you have displayed more intelligence than the Marines and OP.
>>
>>32457548
No nigger it was to prevent barrel warp from M203's. Its why the M4 keeps the heavy barrel.
>>
>>32456994
This guy really has something against marines.
>>
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>>32457642
Yep.
>>
>>32457566
>No nigger it was to prevent barrel warp from M203's
What are you basing this on?
>>
>>32457651
That's a great picture buddy
>>
>>32456994
Hitting a target 7 out of ten times from 500 meters with iron sights is not bad marksmanship
>>
>>32457657
Rapid fire combined with the weight of a M203 WILL bend the barrel. Also what is barrel whip?
>M16A1 pencil barrel.
>It's great!
>SCAR/Mini-14 pencil barrel.
>Crappy accuracy! Muh barrel whip!
/k/ loves mental gymnastics.
>>
>>32457659
Sorry I ripped it from someone else.
Here is a wolfgirl for (You).
>>
>>32457566
> it was to prevent barrel warp from M203's
Once again, you display a startling lack of understanding regarding basic fucking physics. How, how, HOW will making a barrel thicker at the front make it NOT bend when you're hanging a GL off the front? If anything that would make it warp more because you have INCREASED the front-bearing weight. Dumbass.
>>
>>32457689
You don't know how an M203 mounts, do you?
>>
>>32457757
>What is longitudinal strength?
Ok. I'll explain this like you are retarded.
Take two tubes.
One is thicker than the other.
The thin tube takes less force to bend and break.
Now add MORE weight to a thin tube, and then heat it up.
It bends.
>>
>>32457779
Do you? What is that small cut out on the barrel past the front sight post?
>Oh I'm talking about the OLD mount not the new.
>>
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Also
>>32457566
> Its why the M4 keeps the heavy barrel.
M4's don't have heavy barrels, if they did they'd have the thickened profile from the chamber to the gas block as well (pic related). However, the M4 managed to get the single shittiest profile there is for the AR, since it has the useless added weight of the government profile coupled with the 203 cutout that fucks up harmonics.
>>
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m855 is meme-tier.

use m193 for plinking, or one of the more modern 70-grain rounds for self-defense.

use .300 blk for operating operationally with a suppressed 10-inch AR or whatever.
>>
>>32457706
Now who is this?
>>
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>>32457818
Look out front.
>>
>>32457799
>One is thicker than the other
At the front only, which negates the entire fucking point you're flailing to make you cockgobbling inbred cumstain of a retarded chimp.
>>
>>32457817
You realize that's not the only mounting point, right?
>>
>>32457843
I don't think you're mentally capable of making counterpoints, you just post a pic and a few words and hope everyone takes your word for it.
>>
>>32457841
She is from an anime called Outbreak Company. Think Gate. But not retarded.
>Otaku gets job to be a weeaboo preacher in fantasy land.
>Teach Elf's, wolfgirls and other hottie's manga.
>Civ cultural victory.
>>
>>32457566
>No nigger it was to prevent barrel warp from M203's.
One of the designers came forward and said the whole thing was because of a misconceived notion that A1 barrels were bending.

"Since The M16A2 Product Improvement Program (1980-1983) was my program, this is the down & dirty on the barrel thickness issue. We (Marines) were replacing a lot of “bent” barrels that were determined to be “bent” because the Armorer’s Bore Drop Gauge would not freely pass through some barrels during Ordnance Inspections (LTI’s). So the Logisitcs people had “Barrels Bending” on their list of “M16A1” things to “Improve” right after listing “Handguards Breaking.” We “experts” thought this bending was from rough handling like during bayonet drills, etc., as an absence of any mid-barrel handguard damage in these rifles made one assume the fulcrum of such bending was the bayonet lug. So we made that part of the barrel thicker because we did not want the excess weight of a full length heavy barrel. In testing using the bayonet lug as a fulcrum, and applying calibrated mechanical pressure to the muzzle, the new barrel was about 9 times more resistant to bend and take a set than an M16A1 profile. So we went with this “improvement.” However, soon after I started using a bore scope with a video recorder and monitor to inspect “bent” barrels. What I found was a mound of bullet jacket material at their gas ports. This build up was caused by a burr left from drilling/reaming the gas port. This was where the Armorer’s Drop Gauge was geting stuck. When we removed this “mound”, the barrels would all pass the Drop Gauge. We let Colt know what we had deduced, and that is one reason they kept models of “A2’s” in their line-up with A1 profile barrels. However, the A2 profile was already down the road for the US Military. So about the only advantage of the A2 profile was to give the rifle a little more muzzle hang.
>>
>>32457876
>Otaku
Into the trash it goes. Why cant they have people that are not otaku but actually have a job that is not playing vidya and watching anime.
>>
>>32456106
Huh. I didn't know this, and I was a fan of M855.
Thanks, anon.
>>
>>32457848
OK you FUCKING RETARD!
Go out to an iced over river.
One is 6" of ice.
The other is 10".
Jump up and down on them.
WHICH BREAKS FIRST?
>(You) DA THICKER ONE CUZ IT HAS MORE WEIGHT!
Do mankind a favor, NEVER GO INTO ENGINEERING.
>>
>>32457843
That's the government profile. No one can explain why it exists. It serves absolutely no purpose. In fact, I'd posit it actually makes accuracy worse.
>>
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>>32457799
i'd think this picture would be clear enough pointing out why what you posted was retarded, but i don't think you know what a fulcrum is.
>>
>>32457927
THE MUZZLE. WHERE IT HEATS UP FIRST.
>More material=more rounds to heat up.
>>
>>32457886
Why is this being ignored?
https://www.youtube.com/watch?v=fX5RoaYqQ04
>>
>>32457897
Why? Its the ONLY anime that makes sense.
>Gate Commando Officer Otaku.
> OC Otaku responsible for spreading Otaku.
How do you think 4Chan got started?
>>
>>32457397
>And how many 20 inch barrels do you see anymore?
I built my AR with a 20" for the sole purpose of getting the most out of 5.56
>>
>>32457985
Because OP is a fucking retard who think A1 barrels were wilting like cooked spaghetti with a GL attached to them and the fact that the thicker barrel portion was entirely a result of Marine stupidity kinda punctures that. He is living proof that government sponsored sterilization should be a thing.
>>
>>32457951
>THE MUZZLE. WHERE IT HEATS UP FIRST.
?????WHAT
>>
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>>32457566

Your fucking gas tube will melt off before your barrel starts being compromised like that dipshit
>>
>>32456338
He is right you fucking mongaloid
>>
>>32458052
*sigh* look where the material starts to thicken. At the gas port. Heat is recycled because the gas is. The thick material acts as a heat sink.
>>
>>32458089
https://m.youtube.com/watch?v=BSizVpfqFtw
Skip to the end.
>>
>>32458096
Look at>>32456380
The M193 dumps it's KE FAST. The M855 retains its KE, penetrating more.
>>
>>32458158
Wow, stop talking.
>>
>>32457268
Any round can defeat ceramic with repeated shots you dumb fuck.
>>
>>32458229
YOU RETARDED MOTHERFUCKER. LOOK AT THE M16A1 PROFILE AND THE M16A2 PROFILE.
>A1 gas block. .625
>A2 gas block. .750
WOW! IT'S THICKER!
>>
>>32458265
Why are you ignoring me?
>>32457886
>>32457985
>>
>>32458265
What's it like to have an IQ of 60?
>>
>>32458250
M855.
>steel insert.
>keeps round from deforming as fast as M193.
>>
>>32458288
Can you not read? I'm asking seriously. The hot gas being returned back into the gas port, keeps the heat in the section of barrel where the M16A2 has a thicker profile. The added material is a heat sink.
>>
>>32458323
>The hot gas being returned back into the gas port, keeps the heat in the section of barrel where the M16A2 has a thicker profile.
Like I said, what's it like to have a brain where what you're saying here is logical?
>>
>>32458286
Didn't I post this to you?
https://m.youtube.com/watch?v=BSizVpfqFtw
If I didn't sorry.>>32458288
>>
>>32458340
>I don't know how AR's work the post.
>>
>>32458342
What is this supposed to say? I'm not watching 11 minutes of this backwoods retard.
>>32458358
>I don't know how the AR works: the person
>>
>>32458342
That video in no way addresses or disproves the evidence I put forward. Are you actually trying to make a point with this thread or are you just fishing for (you)s?
>>
>>32458399
He just wants (You)s.
>>
>>32458375
Ok. If you even watched 10 SECONDS OF THE VIDEO, You would see the area around the GAS PORT glow red first. The hot gas being diverted back traps heat in that area.
>>
>>32458399
Ok. What point did (You.) Want to make? The M203 issue?
>>
>>32458434
That's the gas tube, you moron. The glowing part of the barrel is a section midway between the chamber and the gas block which is where the powder is burning hottest.
>>
>>32458457
Where it got hot FIRST WAS THE GAS PORT. WHERE THE GAS IS HOTTEST, as it moves back it cools.
>>
>>32458449
You said the A2 profile resulted from there being issues with the A1 barrel being affected by the M203. There is little record to indicate this, in fact, a member of the design team said it was a result of a hasty misconception on their part that barrels were bending from bayonet-related use.
>>
>>32458472
>Where it got hot FIRST WAS THE GAS PORT
Ok prove it. I already did more than I should have and saw exactly what I described. The gas is not hottest at the gas port because the powder is already burned at that point, the flame front is gone.
>>
>>32458473
The government profile barrel was ment to rectify multiple issues.
1.Overheating warp.
2.barrels being bent in h2h.
3. Added weight from M203's
(Which the M16 WASN'T designed for.)

1.Was a real issue.
2. Not so much, the burr from the gas port shears the bullet.
3. As the A1 was NOT designed for the M203 issues came up.
>>
>>32458597
None of what you're saying is true, you have to know that by now.
>>
>>32458476
So by your logic at the END of a combustion is the coolest?
Ok. Grill a steak.
Is the charcoal hottest when it just starts to burn? Or at the end?
Is the barrel hottest when the powder starts to burn or at the end?
Why do SBT's have huge muzzle flash? Because of UNBURNED murderfuel.
>>
>>32458627
1.Go to Google.
2.Type in M16 government barrel.
3. Read info.
>>
>>32458597
You seem to be prone to pulling counterarguments out of the air with no basis in fact or any hard evidence to back them up Good luck out there.
>>
>>32458158
The heat originates at the chamber you crayon eating burden on society. The gas cools down at the gas tube because it has more space to expand.
>>
>>32457397
>The consensus has shifted to that of a more compact weapon being more favorable than something long and unwieldy, even if that comes at the expense of range.

That just isn't true, short barrels are a meme, a fad that everyone goes through because of SBR laws. people would realize quickly that short barrels aren't worthwhile, and you might as well get a longer barrel for better performance from the same ammo.
>>
this thread feels like it's living proof that Cunningham's Law is real, and that it works...
>>
>>32458676
>The barrel.
A thicker tube than the gas tube.
>The chamber.
Even thicker.
>gas tube.
Do you know how pressure cookers work?
Jesus Christ. Your mom must have been drinking, doing crack, meth and dropped you MULTIPLE times after you were born.
>>
>>32456588
This is why I use 262 or 77gr TMK's... I am not going to be shooting through a Truck Door or Concrete. That said I carry 6 mags of each so i can switch out. before I get into my shit. Stock Load is 77gr TMK though.

>mfw I have to drop my accuracy standards for shitty ammo that is M193/M855
>>
so what round is best for a 10.5" 1:7 barrel ar15 within 100 yards?
>>
>>32458907
Tula or Wolf FMJ

possibly Black Hills MK 262 mod1
>>
>>32456877
>Never shot ACOG?

Not >>32456850
But some people just don't know what the reticle looks like...
>>
>>32455949
M855 is filthy and keyholes.
>>
>>32458694
Thread recap.
>Why hate M855?
>/k/ because it sucks!
>OP posts proof.
>/k/ That doesn't mean anything!
>/k/Hey! OP can't post proof!
>OP does.
>/k/ M16A2's suck! And Marines Suck!
>Posts proof that A2 Master Race/USMC.
>/k/ NOPE! YOU DUMB! (post no info.)
>M16A2 sucks war.
>/k/ can't even.
That's all I have for now.
>>
>>32455949
>>It doesn't frag!
>Yeah, out of your 10.5in snowflake SBR.

It doesn't have acceptable terminal performance from the standard issue M4.

OP BTFO
>>
>>32458904
Neat. I carry both M855 AND M193 but got laughed at.
>>
>>32458932
why FMJ and not a hollow point or soft point of some kind?
>>
>>32457073
Find the same thing for 77gr TMK and never look back.
>>
>>32458980
Because they are expensive, but you are absolutely welcome to look into what is available and find some testing done on them.

556 hollow points aren't that common, probably for a reason.
>>
>>32458907
Mk262 mod 1.
>OTM made for the 20" spr.
>SEALS use in 10.5 cause why not?
>holy shit this is awesome!
>Marines want.
>>
File: WP_000194 - Copy.jpg (2MB, 3264x2448px) Image search: [Google]
WP_000194 - Copy.jpg
2MB, 3264x2448px
>>32458980
>>
>>32458940
The 200M is the bottom of the chevron.
The 300M is a post.
>^ pussy.
>| dick.
Marine Memetics.
>>
File: Simple reticle.jpg (312KB, 1382x778px) Image search: [Google]
Simple reticle.jpg
312KB, 1382x778px
>>32459029
Anyone got an ACOG they can post a picture of the reticle?
>>
File: images.png (2KB, 277x182px) Image search: [Google]
images.png
2KB, 277x182px
>>32459044
Here is a clean cheat sheet.
>>
File: 20160823_180148-resize.jpg (3MB, 3024x1696px) Image search: [Google]
20160823_180148-resize.jpg
3MB, 3024x1696px
>>32459003
>>32458979
well I carry both cause reasons.....
>>
>>32459072
Shit. Hold up.
>>
>>32459084
Neat.
I carry both to have flexibility.
>>
>>32457664
And desu you kinda seen as a shitbag if you can't land all 10. Its honestly the easiest since you do it in the prone
>>
>>32458940
I know what the reticle of a TA31RCO looks like, I just don't think it looks like a vagina.
>>
>>32457155
If eating shit is good enough for you, then you go right ahead and gobble that shit up.

I'll pass.
>>
File: k magical.jpg (32KB, 621x192px) Image search: [Google]
k magical.jpg
32KB, 621x192px
>>32459151
>>
File: why I keep coming back here.png (102KB, 678x497px) Image search: [Google]
why I keep coming back here.png
102KB, 678x497px
>>32459151 here

>>32459151
>looks like a vagina
>>32459203
Fuckin saved...

Didn't know I would inspire a magical moment....

>and the captcha shows me sushi....
>>
FUCK I am NOT >>32459301

I AM >>32458940
>>
>>32458158
Damn you fucked up
You wrong
>>
barrel on the A2 was thickened not for heat reasons, not for harmonics either, it was thickened because that part of the barrel is what kept getting bent when dumbasses used it as a prybar.
>>
>>32459301
OP did a magic thread.
>>
File: Ahugefuckingmistake.jpg (41KB, 437x478px) Image search: [Google]
Ahugefuckingmistake.jpg
41KB, 437x478px
>>32459454
> it was thickened because that part of the barrel is what kept getting bent when dumbasses used it as a prybar.
It was thickened because that's what some retards at the USMC though was happening, when it was actually because they mistook gauges being stopped by dirty gas ports as bent barrels. Daily reminder that Jarheads are subhuman and the A2 should never have happened.
http://www.dtic.mil/dtic/tr/fulltext/u2/a168577.pdf
>>
>>32459203
>>32459301
It ain't that funny
>>
>>32459492
That's why the SR-15 has it's unique and well profiled barrel. Eugene knew what he was doing.
>>
>>32459514
>Eugene knew what he was doing.
understatement of the year.
>>
>>32459506
I am bored as fuck and this gave me a bit of a chuckle...
>>
>>32455992
lead occurs in the environment naturally, just look at the water in Flint, MI
>>
>>32458690
>>32457397
AR pistols are another example, they wouldn't exist if not for SBR bullshittery.
>>
>>32459532
He isn't talking about the earth itself, ya moron.
>>
>>32455949
M855:
https://www.youtube.com/watch?v=HRbAfdoU9vY

M193:
https://www.youtube.com/watch?v=I-Fox7v3W7E

You tell me which is better. We can talk all we want, doesn't mean shit at the end of the day, this testing definitively proves M193 is objectively better. If you want to shoot past 100m and have some actual power, you'll need to go with something a little more hunter friendly.
>>
>>32457921
government profiles do not have the m203 cutout
>>
>>32459599
Yes, they do.
>>
>>32458177
Did you miss the part where he specifically states the gas tube is a beefed up non milspec one?
>>
>>32459610
No, they don't. M4 profile barrels do.
>>
>>32459667
Really nigga?
>>
>>32455949
M855 was designed to penetrate steel helmets at 600m out of the SAW. Then some faggot decided everything should use it despite M193 being better at everything except penetrating steel helmets at 600m. Also, people pay out the ass for a round they will never use the full capabilities of, instead of paying less for better ammunition. Stop shitposting.
>>
>>32455949
https://www.full30.com/video/8e760eb1621d9a96c4419c413b932444
>>
>>32460073
>>32460103
https://youtu.be/95sQ4fs7mwg
>>
>>32458211

M855 cannot penetrate steel plates.
>>
I'm super confused after all of this. So what do i want to stock up on for my A2 clone(20" 1:7 twist)? M855 or M193?
>>
>>32461238
Both are good.
>cost M193
>all round performance M855.
>>
>>32461011
It can at 600M.
>>
>>32461238


M193 is the superior ammo.

>>32461483

Don't listen to this cuck, thought he is right in that 855 will cost more for no reason.
>>
>>32461487
Rodger. I'm reading about battle sight zero, and bullet drop compensation. It is my understanding the A2 rear sight is designed with m855 trajectory, as is the ACOG reticle. How much different is the trajectory of M193, or am I overcomplicating things?
>>
File: M193M855Impact.jpg (19KB, 478x279px) Image search: [Google]
M193M855Impact.jpg
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>>32461531
Yes the sight is for M855.
See pic.
>>
>>32461584
Woo thanks senpai
>>
>>32461640
No problem ignore M193 shills.
The only reason is because M193 can pen AR500. /k/ HATES AR500.
>>
>>32461674
True that, and the velocity advantage. All the M193 penn level 3 plates I've seen were tested at nearly point blank range.
>>
File: IMG_2083.gif (2MB, 384x372px) Image search: [Google]
IMG_2083.gif
2MB, 384x372px
>>32456994
>This guy thinks Marines only shoot stationary targets for their rifle qual
>thinks he knows shit about how well Marines can shoot

Holy fuck you can't make this shit up.

>>32459199
So close with that analogy. It's just a shame that like your opinion it's garbage.
>>
>>32456089
That just proves that you're a fucking shit shot
>>
>>32455949
>M193 has the same fragmentation as M855
Categorically false. KYS
>>
>>32456720
M855

One thing I neve see mentioned anywhere is its ricochet lethality. I discovered this by accident. That steel core is still very much lethal after impacting dirt or walls or whatever that would splat a normal all lead bullet. I've punch steel cores through steel sawblades at 250m in the desert coming up short and bouncing them off the ground whereas regular lead rounds just splat on the ground and spray the target with non lethal lead particles and sand.
>>
>>32461858
>anime gril posting
>thinks anyone will take him seriously
lol
>>
>>32456710
That's the selling point of joining the core isn't it? Turning a two sand niggers with a single AK into half your platoon getting killed and an epic story to try and get "suzy Q three kids by other than you" to put out at the bar right?
>>
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>>32461906
>using ">anime girl" as a rebuttal on a Chinese cartoon board
This is becoming so sad. You've been btfo so hard you can't even bait anymore.
>>
>>32461982
>animeposting
>assume their opinion is valid in any way
lol
>>
>>32461982

I think you are the village idiot from finnish imageboard called "Erädorka". Yup.
>>
>>32455949
>Marines can hit shit at 500M. Get good faggot.
>Unfortunately, the current marksmanship standards of the Army fall well short of the level that would be needed to enable the infantry to hit at 600 meters and beyond: In fact, a shooter capable of holding no tighter than 6.1 MOA while kneeling will always ace the Army rifle marksmanship qualifier with 40 out of 40 hits, where only 36 hits out of 40 are required to score at the highest level, expert, and only 23 out of 40 hits are required to qualify at all. This means that statistically speaking, a shooter who holds a spread of 11.1 MOA is very likely to pass the Army’s rifle qualification test as a “marksman”, a spread which at our threshold range of 600 meters is equivalent to six and a third feet, not exactly the precision we are hoping for. I should note that these marksmanship levels are more or less appropriate for the job currently given to the soldier; my purpose here isn’t to badmouth general Army marksmanship, but to illustrate how much improvement is necessary to achieve a comfortable degree of precision at the distances for which long range intermediate rounds are designed.
>11.1 MOA marksman
>11.1 MOA marksman
>>
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>>
>>32457138
except M855 doesn't defeat ceramic plates worth a shit, you dumbass

so it's M855 beats poly and M193 beats AR500. Which do you think is more common, poly or AR500?
>>
>>32457951
but it should heat up first at the chamber?
>>
>>32461486
thin steel plate according to CRISAT spec, which was basically a loose guess by NATO at what soviet armor was capable of.

it won't penetrate 0.25" AR500 even at point blank range, unlike M193.
>>
>>32461674
well, that and the fact that it actually frags worth a damn
>>
>>32455968
I thought that they both penetrate steel but only out of a 20" barrel?
>>
>>32456227
Dude, xm855 is shit. He just said he was getting these results at 100 yds, lrn2read.
>>
>>32459807
Yes nigga, government profile barrels do not have the cutout as a standard feature. M4 barrels need the cutout due to the length of a M203
>>
>>32456872
The patent states otherwise
>>
>>32457153
>board game

REEEEEEEEEEEEEEEEEEEEEEE
>>
> Either one will kill with ease with a 14.5" barrel under 100 yards. They get further frag range with more barrel length
> Muricans aren't skinny Africans
> SBR should be using OTM or Bonded SP.
>>
>>32455949

M855 is shit in the intention that you are trying to kill human beings with it.

>m-muh fragmentation!

Motherfucker a scrawny mountain ape doesn't have enough meat on his bones for it to find a spot to fragment, there's a reason why the military is getting rid of this shitty round and honestly it's been long overdue. While I have had my personal gripes with M855A1 due to weather performance, it's a hell of alot more accurate and it will punch through barriers pretty damn well.

>b-but it's accurate!

It's decent but there are certainly better alternatives. At 500 meters it is god damn worthless for combat because this implies your target is relatively not moving and you can afford that.. what, 8 MOA gap on an adrenaline rush? Yeah not worth the time.

>M193 better

At point blank, sure. But technically it is better for us because A.) It is cheaper. And B.) It will cause some unpredictable and unfuckable wounds for home defense purposes. However this round was also replaced due to reasons mentioned in thread. Doesn't travel that great out of a 1/7 barrel in my experience. Also keep in mind that 20" barrel rifles are going away now, forever.

All in all, M885/M193 = Range + Drill rounds

For purposes of putting down animals both four-legged and bi-pedal, see hollowpoints in grains 50 to 77.

For military application of modern conventional 'force on force', see MK262/MK318/M855A1 or even M856 tracers.
>>
>>32462423
>CRISAT spec, which was basically a loose guess by NATO at what soviet armor was capable of.
Nothing of guess it was 6B2 soviet body armor.
>>
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>>32462057
>using ">anime girl" as a rebuttal on a Korean cartoon porn imageboard
This is becoming so sad. You've been btfo so hard you can't even bait anymore.
>>
>>32464711
>Doesn't travel that great out of a 1/7 barrel
Well meme'd
>>
>>32468255

its not innaccurate but it does maintain piss poor velocity and m193 doesnt do so hot in my 1/7 either
Thread posts: 240
Thread images: 35


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