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Posted: 6/10/2010 6:07:58 AM EDT
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Hello,
I am very new to AR-15.com and new to owning an AR, but not new to reloading 223/5.56 for my bolt gun. If anyone has ever had to take the primer crimp out of the primer pockets on old military brass, you know that it is a real pain in the you know what. 
I have, however, have found that if you use a SHARP 7/32" drill bit(yes, in a drill), and just "kiss" the edge of the primer pocket, it does a great job of removing the crimp. I just wanted to share this beneficial tip with you all. That is all. Good luck. |
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Quoted:
Hello, I am very new to AR-15.com and new to owning an AR, but not new to reloading 223/5.56 for my bolt gun. If anyone has ever had to take the primer crimp out of the primer pockets on old military brass, you know that it is a real pain in the you know what.
I have, however, have found that if you use a SHARP 7/32" drill bit(yes, in a drill), and just "kiss" the edge of the primer pocket, it does a great job of removing the crimp. I just wanted to share this beneficial tip with you all. That is all. Good luck. One welcome This is the ammo forum, we have a reloading forum where this will get moved The drill bit does a poor job IMO. A crimp remover chucked in a drill gives a cleaner cut and removes less metal. It is possible with a drill bit but its hard to control for LR primers, like 308, a 50 BMG deburring toll works exceptionally well |
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Welcome 7lugger.
Removing crimp with a drill bit or countersink will work in a pinch, but it's very possible to remove too much metal. Primer crimp removal is best done with a tool designed for the purpose. 
The cheapest and a fine tool is the Hornady reamer front left, about $12. Has a built in stop, can't ream too deep. Center is the RCBS swager die set for about $40, it's ok. The best swager by far is the Dillon Super Swage in the rear for $100. Chucked in a drill, the Hornady reamer is fast and cheap. 
What I use for small batches. Read the FAQ's and Tutorials at the top of the page, a lot of good AR reloading info up there. 
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