Get the Crimp Out! The Best Way(s) to Decrimp Primer Pockets - Squibloads' Gun Thoughts

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Yesterday Rutilate was bitching at me about small guide pockets in some Lake City. 223 brass; in the beginning, per SOP, I just kinda tuned him out and waited for the grumbling to go away. But then I got to believing about it, and wondered if there might be a shred of trustworthiness there, because I consistently find.

Let's begin with this photo: Per those specifications, a small guide pocket should be 0. 117-0. 123" deep. I measured a handful of. 223 brass, some prepped by me and some prepped by others, and I discovered a number of them that were shallower than that. (Determined using the butt end of my calipers.) The military brass certainly seemed to be shallower than the commercial.

I determined the depth of the guide pocket of each of them, measuring 4 times at each "corner" of the pocket. I then swaged each of them with my Dillon Super Swage 600, cranking the handle simply enough to get rid of the crimp and allow the "go" gauge to get in. This Site determined the pocket depths once again.

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Here are the results; when there is a variety of measurements, it's due to the fact that I got different reading in the four various places of the pocket. Prior to Swaging:1: 0. 1172: 0. 116-0. 1183: 0. 1204: 0. 116After "Simply Enough" Swaging:1: 0. 116-0. 1182: 0. 116-0. 1183: 0. 119-0. 1224: 0. 115-0.

112-0. 1182: 0. 112-0. 1163: 0. 119-0. 1224: 0. 113-0. 118Here's a picture of the Dillon swager; you move the case over that long black "support rod," then lower it down into the system, and then the swager rod presses into the primer pocket: Here are my conclusions:1) "Simply sufficient" swaging didn't really impact the primer pocket depth.