To build or not to build is a stupid question

>>34147507
Theyre heavy. Made for precision or high volume shooting.

>>34147566
Well I know that much, I meant any preferences from those that own one on how they set it up. I might build one and just use the rest as clubs for when I run out of ammo

Just make sure to get the right diameter gas block. The only thing special about a bull barrel it is that it's stiffer than other profiles, and makes your rifle front heavy. Sight systems built for 20" barrels will work the same.

>>34149203
What load of 223 should I be running through a barrel like this?

>>34149734
Depends on the twist rate

>>34149747
1-9

>>34149889
Lighter bullets should work better for you, as the heavier bullets require a greater twist rate (less inches to the rotation). M855 is the reason 1:7 twist barrels exist.