You really do not need a long barrel for accuracy in a centerfire gun. Just find the round your rifle likes. The problem not is to find .308 ammo especially the stuff that is not fmj. I don't know if reloading components are as scarce as ammo is. I have always shot 150 grain corelocts in my .308, the barrel is 21 inches and it groups very nicely.
Last edited by Oldtimr; 03-13-2021 at 10:56 AM.