I clean my BP brass in small rock polishing size tumblers using ceramic media and a soap/water combo. Does a great job. I also have a Lyman Turbo 2000 that came with a green colored kernel medium that I run my old multi-sourced .30 cal brass in. It does a so-so job but is very dusty, most all of the brass has a kernel stuck in the flash hole, and I just don't like using it. Is there better media that I can use in the Turbo that doesn't have these disadvantages? Thank you.