Good advice, LA, 8 twist.
I like mine, set up for 140 VLD's.
Pre-64 with Borden's Bumps, 26" Krieger, Boyd's Jon Sundra sporter, Jewell trigger, pillared, glassed, free floated, wearing a Z5 with turret.
Half MOA at 400 not a problem. Does a job on Pronghorns, WT's and hogs.
DF