i am a simple fa/tg/uy with a simple fa/tg/uy related question,

>>33364686
It'd make it worse because the friction is what makes the rifling grab the bullet and force it to spin.

>>33364778
This

>>33364686
Well, it would increase velocity and this would extend the range it is lethal at.
>>33364778
Friction isn't responsible for that.

>>33364790
Are you retarded? Have you not even taken a high school physics class? Friction is the force that transfers the bullet's forward momentum into rotational momentum. If there was no friction then the bullet would just glide down the barrel and ignore the rifling.

>>33364857

Correct. The bullet would just tumble without friction.

>>33364686
What happened in your game that this is a question?

>>33364857
You're wrong. By that logic gears operate by friction. They work because there is a series of teeth used to transfer rotational energy.

In your world, teeth would not be necessary and rotational energy would be transferred by two circles pressed together.

Pls don't b dum

>>33364903
>two circles pressed together

With enough friction this is possible

>>33364686
Assuming the rifling is still somehow able to impart spin on the bullet to achieve precision, no it would not. It would just increase the barrel's lifespan.

>>33364903
You're joking, right?

>>33364857
You realize friction is a by product of obturation, not the cause of it, right?

>>33364903
Well a bullet doesn't have teeth to catch the rifling does it? The shifting of friction points as the bullet moves down the barrel and down different parts of the twist will impart that rotation on it.

>>33364686
No, in fact it benefits more from the opposite: A progressive decrease in bore diameter. See the Canadian C7.

>>33364903
Like a belt does?

>>33364973
>Well a bullet doesn't have teeth to catch the rifling does it
Yes it does.
A soon as it enters the rifling the negative of the lands is imprinted on the bullet.

>>33364903
That doesn't matter considering jet fuel doesn't melt steel beams

>>33364901
>>33364686
Yeah I'd like to see this question answered.

>>33365020
Here you go>>33364790

>>33364984
A squeeze bore doesn't increase friction, it reduces it.

>>33365019
well played.
>>33365053
no the fuck it doesn't. it increases friction, while increasing pressure more. that is why you get increased velocity.

>>33364778
>>33364790
What makes the bullet engage the rifling is the fact that the rifle lands have a smaller diameter than the bullet, and so there's a deformation in the bullet as it gets shoved through by gas pressure, forming a matching set of helical inclined planes between the bullet and barrel. Friction isn't required to make inclined planes work, so the rifling would still spin the bullet in accordance with the twist rate. However, there's another concern.

The propellant burn rate is proportional to pressure, and so you need pressure in the barrel to get the most out of your powder. In a lot of guns the barrels are too short for that even with friction (see the reduced performance of M4s and SBRs with barrels shorter than a foot). Reducing the friction between bullet and barrel will reduce the amount of pressure required to move it through the barrel, and will therefore result in an even more incomplete powder burn. What this means for your ballistics is that the bullet is moving slower, potentially slow enough to matter. However, like the comically short M4s, AR pistols, and SBRs, the bullet may still be moving fast enough to deliver adequate terminal ballistics, it just drops faster.

TL;DR, It depends on what they're shooting and how close the target is for whether or not it's significantly worse, but it's not going to be better.