Re: Almost too embarrassed to ask!!
Lab I just saw your post. I use the frankford arsenal polish that came with my tumbler and media. It sells by itself also and is not suppose to harm cases. You add two tablespoons to each pound of untreated media ( I think ). It works good my cases come out bright and shiney and it has a citrus scent to it instead of a cleaner smell.
Guns and ammo, what more do we need?