My pref is for 1:12 they shoot 147-169 very well. 1:10 is more friendly with 160-220. I find 1:12 far more useful in 308 as the small case capacity really doesn't lend well to 170+ loadings.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
I have a old 788 rem with a 1-10 twist barrel that seems to prefer longer 150 to 165gr bullets but 125gr NBTwill still shot moa too if I have a good day shooting . I have not shot any bullet over that weight .