I found with corn cob and walnut aka (lizard dirt) running with a few dryer sheets in the media without brass will remove most of the dust. I tired of sifting and the media clogs and bought the Frankfort Arsenal wet media tumbler which comes with 5# of pins. Brass comes out like brand new inside and out and no residue on them. Then hit the inside neck with Redding Imperial Dry Neck Lube to seat bullet. The graphite won't contaminate powder