Assuming thats fired straight out of the chamber and not sized?
If its sized then youre probably using too much lube though they are a bit pointy and low on the shoulder for normal lube issues. So Im not thinking this is the issue.
If you fire one and slowly extract it making sure to cushion it with your finger as soon as you can so that it doesnt slam into anything on the way out of the action, is it still present? Aka, did it get created inside the chamber or did it happen on its way out?