ajax cleans the crap out of them in a tumbler mixed with the media!
you could just substitute the moly for white graphite. hydrophobicProbably the worst here. I have a cast iron pan full of Sta-Lube Extreme Pressure (Moly-Graph, with a heavy mineral oil / Lithium base wheel bearing grease cooked down and mixed with Bees wax to solidify. This mix is for pan lube boolits, but for revolver cases a little lube on a rag leaves a very fine film. Yes powder can stick (if on the inside of case).
Maybe not the best for use in an AR since moly becomes acidic under extreme temps.