Proof Research 308 Win 16.5" 1:10 Rifle Barrel

A 16.5 inch 308 Winchester barrel from Proof Research with a 5/8x24 threaded muzzle. Sixteen and a half inches is the length shooters land on when they want a rifle length barrel and not one inch more, usually because a suppressor is going on the end and every inch there counts twice. The 308 gives up less to a short tube than most cartridges its size.

Barrel making comes down to how consistently bore and groove dimensions are held, and that is the part of the job Proof Research is known for. The 5/8x24 muzzle thread is the standard pattern for 30 caliber cans and brakes. Confirm the shank profile against your action before you order, since this barrel is listed by bore, length, twist and thread rather than by platform.