Yes, I had similar issue with 12 LRPV, finish on the chamber was terrible, it will deform your brass to a point you wont be able to cycle fired brass again even after FL sizing. The fix for this is to re-chamber, just run chamber reamer to take off whatever chatter you might have in your chamber.
Try to chamber fired brass and see if you can cycle it.
here is chatter in my LRPV
Bookmarks