I used hornady brass for some of my light loads and IMI 5.56 brass for the 77s but I have lots of LC brass just the primer crimps are a pain in the ass, I use a chamfer tool before I prime them but whats the cheapest ans easiest way to clean out the crimps, ill probably stick with LC brass if I start going hotter
Get the Dillon Super Swage...
Weapon of Choice: Illudium Q-36 Explosive Space Modulator bolted to a crappy old T53 stock