I only changed the flair of my expansion dies so that I could just barely start a bullet into the casing. I made no other changes as far as resizing, the slight crimp, and the OAL to my dies. I figured I would make one change at a time till I figured out what was wrong. Only fired about 40 rounds, but so far no problems. Just wanted to thank everyone for your input. This site is amazing and very helpful for us newbies.