Mike, my older CVA Breechplugs had the spring in them to hold the primer in, but the newer BP's for My ACCURA dont, they fit too loose. Im thinking they are causing the blowback as the carbon escapes around the inside diameter of where the primer fits into the breechplug. I dont have a problem with fit as when the action meets the breechplug and primer, that is good. It's the primer fit in the breechplug hole where the primer sits.
I have to be careful in the dark in the morning when I put the primer in and close the action as sometimes the primer falls out befor I get the action closed and I dont notice it, or I do see it fall out and have to put a fresh one in. I'd be really bummed if it fell out and I did'nt see it and then have a good buck in my sights and pull the hammer back and then nothing! So now I have to be careful when puttng the primer in to make sure it's there and did'nt fall out. Also Im still gonna send you the pic of my big doe to put on the forum for me, but I was waiting for a pic of a big buck to go with it,,,lol Thank's Mike
(BP)