I use a liquid brew that I got from here about two years ago. It is 2 oz RCBS liquid case cleaner, 1 cup Iosso, 1 cup vinegar, mixed in 128 oz water. I use it in my RCBS Sidewinder and even black military junk comes out like new. I even have folks paying me for the "goodies" to make this stuff and tumble/clean their brass. Not a bad deal. Brass that just needs a light cleaning I just put it in the juice and leave it for a couple of minutes and it looks new again. I have no abrasive residue to remove or put into the chamber of my guns, I have no primer pockets to pick media out of, I don't have media falling all over, just put the brass in the tumbler, cover with liquid, tumble about twenty minutes for the real dirty stuff, wash with clean water, put it in my little toaster oven at 150F and in 30 minutes- I'm ready to load. I get about 100- 3006 cases or several hundred pistol cases per round.