As waspocrew said, I use LC brass for my 6x45 and commercial brass for my .223s. It is also much easier to see the visible differences between the two than you might think.For reloading a wildcat cartridge, like 6x45, what is the normal method people use to make it easy to distinguish between that and the parent cartridge? Should I be marking the heads with a distinctive Sharpie? Or is there a better method?