Ok I'm new to reloading and I messed up and need HELP!!! Here's the story I got about 500 pieces of once fired .243 brass from my brother who has since passed. So I don't know the history of the brass or what it was fired in. I picked out 100 pieces of matching head stamp brass, deprimed, FL resized, tumbled, chamfered the primer pocket and cleaned the primer pocket, trimmed to .002 below max and chamfer ID and OD of the neck. Then primed and started loading. I have a brand new savage never been shot. Loaded 30 rounds chambered a few every thing looked great. Changed bullets loaded a few more went to chamber a few and had one that I couldn't get the bolt closed. Checked my brass lengths and my cartridge O.A.L everything looked fine .025 off the lands just like I wanted. What the heck?? So now I chamber the 70 or so pieces of primed brass I have left. 1/3 chamber like butter, 1/3 a little tight, 1/3 can't get the bolt closed. So now what? The only thing I can think of is some of the brass the shoulder pushed forward more then others. I ran my RCBS FL sizing die 1 1/2 turns off the ram just like they said. Is it safe to run primed brass thru a FL sizer with the primer pin removed? Sounds like a bomb to me if that primer pops. Or how do you remove a live primer. Long story but I knew you guys would need details, thanks for any help.