New and stiff bc/bolt/gas rings, or maybe if you used any lube, slowing it down?
how many rounds downrange? I would try to get 50 factory rounds downrange then look at it.
O yeah, measure that FP before simply swapping. Are you using the toolcraft bolt?
Toolcraft was (and maybe still is) using a shorter fp by ~0.11 in its bcg's, so putting in a milspec fp could lead to pierced primers w/ their bolt. Has to do with how they made the bolt to accommodate the deeper face depth, they didn't add the +0.11 onto the rear of the bolt like it should be (the real Grendel bolt has the 0.136 face depth and the longer tailpiece so you can still use a milspec firing pin).
how many rounds downrange? I would try to get 50 factory rounds downrange then look at it.
O yeah, measure that FP before simply swapping. Are you using the toolcraft bolt?
Toolcraft was (and maybe still is) using a shorter fp by ~0.11 in its bcg's, so putting in a milspec fp could lead to pierced primers w/ their bolt. Has to do with how they made the bolt to accommodate the deeper face depth, they didn't add the +0.11 onto the rear of the bolt like it should be (the real Grendel bolt has the 0.136 face depth and the longer tailpiece so you can still use a milspec firing pin).
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