Federal brass

[anachronism]

I'm having some trouble with some Federal Gold Medal .223 brass. I'm getting major leakage around the primer pockets on a few cases. These cases originally had crimped primers, and I removed the crimp with a Lyman reamer. On the first firing, about 20% are showing leakage around the primer. Other brands of cases aren't doing this, despite being processed with the same tools. My regular Federal brass has been problem free. Any suggestions?

 

[Dans40X]

Been there with Federal GM .223 brass
Bolt gun or gas gun

After the second fireing throw the Fed GM brass away.

Or more problems will arise

 

[anachronism]

I just tossed all my Federal GM brass. The leaks around the primers flame cut my ARs bolt face. It has some serious pits in it now. That's $50.00 that could have been better spent elsewhere. Now I get to buy a new bolt. No wonder Federal crimps the primers in, it's probably the only way to keep the darn things in place.