7 prc

They loads cycle fine even after charged. It's only once the round is fired
Yes but if you are not bumping the shoulder much you can screw the die in more and it might help. It's also good to know how much you are sizing for case life, consistency. I have also seen dies that were bumping shoulders way too much when set up per the instructions. It's a cheap tool. I had a lee die that was sizing .015. Way too much and lead to a case head separation.
 
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