Primer Crimps...what to look for...what to do


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Slinger
May 1, 2008, 06:48 PM
How can I tell if my 5.56 or .223 brass has crimps after I deprime them. I have some Remington brass and the primer pocket looks the same as the L.C. brass that I have. If the cases have crimps what is a easy way to remove the crimps without buying a 90$ Dillon Swag tool.

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mtgale00
May 1, 2008, 08:10 PM
If you look at the head of the case, you will see a "step down" just before the opening of the primer pocket. The crimp is created at the same time the primer is seated. Another indicator for crimping are three stake marks 120 degrees apart around the circumference of the primer pocket.

Unfortunately, unless you have a Dillon 1050 setup for 223, you will need their $90 swagging tool. The 1050 has swagging station built into it.

Most .223 / 5.56 ammo is crimped because it is manufactured on the same machine. Having said that, you can bet your next paycheck that we are going to see a ".223 / 5.56 is not same ammo" post.

Grandpa Shooter
May 1, 2008, 08:44 PM
Most .223 brass which is "crimped" will look to have another ring inside the primer pocket. If I had not just finished chamferring all my .223 I would post you a picture.

Take two and hold them with the pockets up. If one looks to be slightly beveled on the edge leading into the pocket and then drops down into the pocket, and the other one looks to have a bright shiny ring inside the pocket, the one with the ring is "crimped" and you will need to chamfer (bevel) the edge to allow the new primer to slide into the pocket without flipping over or going sideways.

You can buy the expensive swaging tool, or you can go and buy a 1/2" bevel tool for around $12 and put it into a drill, preferably battery operated, and gently bevel (chamfer) the pockets.

The purists will be along shortly to tell you how to do it "right", but many of us will tell you it can be done and work just as well without the expensive gizmo's.

kennedy
May 1, 2008, 08:55 PM
buy a primer pocket swaging die from CH tool $21, it just threads into one of the holes on my lee turret press.

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