Driller54
Well-Known Member
The guessing game is a pain, especially if it's your first time and you don't wanna mess it up. LolI had a 243AI barrel for hunting that was .710 ish at the muzzle. I could put a 10rnd string through it and no POI shift. It was called a heavy sporter contour from NSS. You could even get away with a light sporter from NSS. Not that you would get an NSS, just a frame of reference. I know the contour guessing game! LOL