Weird primer strikes?

[Kaaanged]

Got a new rifle in 375 cheytac and these are odd primer strikes I've never seen before and one pierced primer. First time loading up 375 and these are new brass. Anyone have any idea what's going on?

Peterson brass
Cci 250 large magum primers
390gr hornady atip
H50 bmg powder 133gr -137gr
30 inch barrel Chrono at 2680 - 2750 FPS

 

[ShtrRdy]

Have you taken a close look at the tip of the firing pin?

Is the rifle easy to cock after firing? Wondering if it has a light firing pin spring?

I've seen primers like that from semi-auto pistols. In that case it was because the hammer bounced or the hammer didn't have much pressure on the back of the firing pin after firing.

 

[supercorndogs]

I have seen primers do that right before they start peirceing. It looks like one is peirced.

 

[TheOE800]

I have seen primers do that right before they start peirceing. It looks like one is peirced.

Agreed. Though it looks like one or two are severely cratered to me? 2nd row from the right 4th down and middle row top.