Quality factory brass not ejecting some times.

melchiano

Private
Minuteman
Nov 24, 2012
1
0
53
California
I have a Kimber Advanced Tactical 300 Win Mag. I have been firing Federal Pemium ammunition only. the gun is incredibly clean inside yet the bolt is getting stuck and wont pull back after firing. Sometimes the first few shots don't get stuck. Then it just starts getting worse with each shot. The bolt goes up after firing the round, but it doesn't w any to slide back and eject. It's as if the diameter of the round is expanding. But that's just a guess. The primer looks very flat er being fired. My .308 brass from my Remington 700 does not look like that and does not ever get stuck. I have no idea what it can be and I would really appreciate any helpful advice. If I don't put any ammunition in the bolt slides perfectly. Thank you.