Originally Posted by #40Fan

I wouldn't call it partial FL sizing, but maybe it really is. What I was trying to get at, and what happened to me, is don't over do the FL sizing. When I started out, I was doing exactly what Lee's directions stated. The brass loaded fine, shot fine, but after 3 or less firings, brass began to separate. I found out that I was sizing them way too much. When I finally got the tools to determine the amount I was sizing, I understood the problem that I was running into. Since then I have been carefully measuring the amount of sizing being done to my brass I am now on my 5th firing of my last 50 pcs. of brass for the 7mmRM.