I know when my octane 45 was really nasty from 500-600 rounds 22lr and around a case of 9mm it was pretty nasty, but obviously not blocked/ dangerous or anything.How often round wise do you guy's clean your 22 cans?
Did you ever try it on the aluminum end cap?I dunno. I'm going to toss an aluminum end cap in there to see what it does. My aluminum silencers would not fit in this tumbler anyway