I shot a 30 rounds through my Pedersoli Trapdoor carbine today and twice had the bolt black open up on me when fired. I was shooting Cody Dixon targets at 50 yards, so I was using a light load -- 1100fps at 300gr. It do not open up enough to either eject the shell or partially cock the hammer. I have heard of this happening with an H&R ( round cam slipping), but not with a Pedersoli . Any thoughts?
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One additional detail: I just had a broken firing pin replaced .
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