Here's what I got last weekend.
The first is Hornady, 5 out of 20 didn't fire first time. Primer is flat on all of them, however there IS a dent on the one that didn't fire which I removed instead of hitting again.
The second is PMC, all 25 fired great. Primer does show some metal pealed to the side though about the 1 o'clock position. It's that way on both the cases I found.
The third is some brass I accidently picked up. I don't know what it was fired from, but it looks alot more 'normal' than either of the R9-fired rounds. On that round the metal around the strike is smooth. On both of the R9-fired rounds the metal around the strike has a sharp edge.
I do know that I had primer fragments from the Hornady, one case I have still has a piece hanging from it. It's possible I got some from the PMC as well, now that I see it's odd too.
Anyway, can someone else compare the strikes on their primers to what I'm seeing?
[update] I remembered the cases sent with the pistol, so I had a look. They are marked "F C". One has a perfect dot in the primer, the second has a gouge running from it. It's like the firing pin is still engaged in the primer when the barrel starts to drop?