I still have the original hand primer (not the universal), I got with my Rockchucker kit around 10 years ago. I have primed in excess of 50K cases with it. I set about prepping a batch of .300 Win Mag brass last night. I was getting ready to start powder drop, and noticed a protruding primer. After inspection, a good 60% are grossly extended and the rest are mildly so. I stripped the hand primer down and could find nothing amiss. The plastic shell holder mounts are surely worn, but aside from that I am lost. Any ideas? Should I just email RCBS?