I tried a second R-P and, again, a solid round. If you don't remove the crimp it is quite possible to squash/dent a primer while trying to re-prime. Remington RP9 Pistol -The Remington RP9 pistol has a fighting surface on the rear sight for one handed slide operation. Lo and behold, the finished round was tight and could neither be pushed or pulled by hand. I've only ever bothered with rifle cases, like I said, but when it's crimped you can definately feel the reamer taking a big bite out. I have a Lyman primer pocket prep kit that a case-mouth deburring tool (for after trimming) and two interchangable handles which fit tips for large and small pocket cleaning, and large and small pocket reaming/uniforming/de-crimping. I don't think I've ever noticed with pistol brass, but all mine is commercial/non-military, so I wouldn't have seen it. The whole pocket edge is "squished" in just a touch to increase the grip on the primer. this brass has been sorted for steel, aluminum, berdan primed brass, damaged cases, and any other imperfections that we find. Bulk Processed 9mm 11,000+ Pieces 990.00 880. 30-'06 brass, and just looks like a little lip around the whole circumference of the primer pocket. 30-30 win fired/washed - rp hd stamps 'washed and cob tumbled. The second type (I think anyway) is something I see on old military. You'll see three little indentations right at the edge of the pocket that deform the brass a little to hold the primer in place. One that I see sometimes on military 5.56mm brass has a 3-point staking print around the primer pocket. Click to expand.There are two kinds that I know of.
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