Lyman has pioneered and tested many types of media. We offer You the very best formulas available. For Cartridge brass, we recommend corncob grit. Untreated, it is mildly abrasive and absorbs up to sixteen times its weight in fluid and dirt. Treated, it works even faster.
Or, you can try Lyman Turbo Brite Brass Polish with untreated corncob and see the difference.
