ORIGINAL: n5638b
Was wondering why some of my 209 primers have the center blown back towards the bolt and some don't after I fire them. CCI's and Remington Kleanbores have done this on 2 rifles. As ahandloader for centerfire, I'm thinking pressureis the culprit. But I'm only using 80-90 grains of Pyrodex and I don't crush the bullet in real tight. Any ideas?
Like you, I would guess it is the back pressure from the breech. As for why one does it and one does not could also have something to do with the design of the 209, the design of the breech, how well you seal the breech, or the chicken crossed the road. I really don't know.
I normally shoot Remington Kleenbore Primers in my Knight and CVA. Sometimes, Winchester W209's. Both if them do it. Sometimes the primer will just be dented and the next time blown apart. As for the amount of powder you use, I seen it happen with less powder and not happen with a lot more powder.
As long as the rifle fires and the spent primer does not jam the action I guess it is something I just learn to live with.