Bat Rastard
Gold $$ Contributor
I was having that trouble on 30BR. I can't chamber them before I turn them. I am pretty sure it was the slop in. The shaft causing me to gouge the shoulder. Neck thicknesses were pretty consistent.The cuts not being uniform was an issue I experienced when I first started turning necks. And the reason I was seeing that was that I was turning the necks before the brass was fully fire formed. In addition to having the cases fully fire formed, annealing them after firing and before turning helped get the sizing consistent to where I get very consistent light cuts into the shoulders.