Just wondering, what do you guys use to clean your cartridge brass? I've been using crushed walnut media. While it gets the brass pretty clean, it leaves an ample amount of red dust on the brass and every nearby surface, such as my hands, clothes, and plastic containers. If I switch to corn cob media, will it clean as well while not leaving dust all over the place? Alternatively, is there a way to reduce the amount of dust produced by the walnut media?