PMC is the brass that I've found to have a ridiculous number of off-center flashholes. I've experienced it in both .308 and .223. It is used as "throw down" ammo now-no attempt made to collect the brass...

I don't buy that stuff but my shootin' buddy bought a bunch on sale for blastin' ammo. If you want a show, shoot PMC rifle ammo when it's starting to get dark-AWESOME-HUGE fireballs!!!! Can't begin to imagine what kind of powder they use.