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Old September 15, 2011, 03:02 PM   #1
UtopiaTexasG19
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What Is A Crimped Primer?

I was looking at some of the "once fired brass" vendors on the Internet and some are selling .223 brass with "crimped primers". Does this mean the fired primers are still in the casing and need to be removed or is their another meaning to the "crimped primer" notifications? Thanks...
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Old September 15, 2011, 03:26 PM   #2
Sevens
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Crimped primer usually refers to military produced ammo. They crimp the primer in place so that it doesn't work itself loose under extreme conditions, such as full auto firing from a larger platform than, say, the M-4.

Just like any other brass, they decap just fine. The problem comes when you attempt to PRIME those cases... the crimp tends to get in the way.

Some people cut them out, some use a swage die to squash them out. Others simply prime carefully around them.
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Old September 15, 2011, 03:31 PM   #3
Stick_man
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Most of the military brass has "crimped" primers. You can fairly easily tell by looking at the bottom of your brass and you will see a little ring of brass around the primer, between the primer and the primer pocket. It won't necessarily be consistent size the entire circumference, but will be noticeable. It is used to help keep the primer in place (whether or not it is needed). When you reload crimped brass, you would decap it normally but before you put a new primer in, you will need to remove the crimp. It can be done through swaging it or cutting it out with a crimp remover. Otherwise, you will have a hard time seating a new primer in there without destroying the new primer.
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Old September 15, 2011, 06:23 PM   #4
UtopiaTexasG19
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Thanks for the replys. I can find regular once fired brass for the same price as those once fired with the crimped primers so I see no reason financially to buy this type with the extra work included!
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Old September 15, 2011, 06:56 PM   #5
243winxb
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Crimped Primers

Remove the crimp by swaging or reaming the primer pocket before reloading.
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Old September 15, 2011, 08:39 PM   #6
Miata Mike
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Quote:
Just like any other brass, they decap just fine.
Usually. I took a nice close up picture of three pieces of crimped 9mm brass that jammed my Lee Pro 1000 the other night. The decapping pin just about turned the primer inside out without detaching from the crimp. I never saw that before the other night.

I also can't find a way to transfer the picture to my computer (adapters are with my laptop 70 miles away).
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Old September 16, 2011, 01:49 PM   #7
Sevens
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9mm with crimped primers is, at my bench, scrap metal for the recycle bucket.

Simply put, I have SO MUCH 9mm and I know it's painfully easy to get scads of it, I just recycle any 9mm with a crimped primer.
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Old September 16, 2011, 04:32 PM   #8
Miata Mike
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Quote:
9mm with crimped primers is, at my bench, scrap metal for the recycle bucket.

Simply put, I have SO MUCH 9mm and I know it's painfully easy to get scads of it, I just recycle any 9mm with a crimped primer.
For the most part, when I find it upon sorting head stamps I keep it separate. I really doubt that I will ever take the time to swage the stuff and it will most likely end up as scrap.

I have 2 ice cream pails of 9mm empty brass. Problem with me was I sized and deprimed on my progressive press to save time and will hand sort another day.
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Old October 4, 2011, 10:53 AM   #9
ammorelds
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you could get a primer pocket reaming tool put in drill and go to town....only cost $10ish
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Old October 4, 2011, 11:41 AM   #10
Dr. Strangelove
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I've got a thousand or so military .223 I picked up off the ground back when ammo was hard to find and reloading tools were flying off the shelf. I also ordered an RCBS swager, but I find I really don't use it much. There is just too much uncrimped to be had to mess with the crimped stuff. I do have it for a rainy day, I guess.
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Old October 4, 2011, 07:20 PM   #11
medalguy
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I prefer military brass. I find I get more reloads out of military as a rule than commercial. It tends to be more consistent than commercial as well. That makes the extra task of removing the primer crimp (a one-time proposition) worth it.
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