I'm using Berrys tumbler and polish. As the directions on the polish says I add 2 capfuls of polish per 1000 rounds of 9MM. and 1 capful on each next batch. what I'm seeing is the brass comes out very clean and shiny,However when I De-cap and resize I get a blackish film on the clean brass, I suspect I have to much polish.
So what is the correct way to use my new tumbler?
I'm using corn media made for tumblers.
So what is the correct way to use my new tumbler?
I'm using corn media made for tumblers.