I just shot in a f-class tournament this weekend, and exactly one out of 100 fired cases had an odd primer appearance. I thought the collective wisdom of this site might be able to explain it. If I had to describe it, I would say it was the opposite of flattened; rather it is pushed in. It is not pierced.
(the case on the left. apologies for the poor photo, a phone can only do so much)
The case in question was for a 6BRX, and to my recollection did not shoot differently than any others. The other 99 cases look as the one on the right did (normal). The load (powder, case, bullets, seating depth, primer (federal), etc. etc) is identical to what I've been using for several years now (over 1800 firings, same bbl, same action), and although warm, has never exhibited pressure signs even on very warm days.
I'm not particularly worried about this and am willing to chalk it up to an anomaly, but I am curious. I thought maybe somebody had seen something similar.
-nosualc

(the case on the left. apologies for the poor photo, a phone can only do so much)
The case in question was for a 6BRX, and to my recollection did not shoot differently than any others. The other 99 cases look as the one on the right did (normal). The load (powder, case, bullets, seating depth, primer (federal), etc. etc) is identical to what I've been using for several years now (over 1800 firings, same bbl, same action), and although warm, has never exhibited pressure signs even on very warm days.
I'm not particularly worried about this and am willing to chalk it up to an anomaly, but I am curious. I thought maybe somebody had seen something similar.
-nosualc