Quote Originally Posted by Idaho View Post
I'm using a Redding full length sizing die with neck bushing. Unless this rifle has a chamber that is shorter than my other one the cases are not long enough to trim. I tried and they don't even reach the cutting head on my trimmer. The lip formed from the wet pin tumbler is real easy to remove with the chamfering tool. I tried to measure it and it is about one thousandth for a total diameter increase of 0.002. It was hard to believe that would be enough to keep the bolt from closing but it is.
Question, are you using the Redding expander with your bushing die?

If the case mouth is peened it will create more drag and the expander "may" be excessively pulling on the necks and moving the shoulder forward.