Have started a new method for brass cleaning. Picked the tip up on another forum I frequent.
Using a Thumlers tumbler, stainless steel wire cut in very short pieces as the media. (.060"X.250") 5 lbs. of the media and 300 .223 cases, 2 oz. of Ivory dishwashing liquid, 8 hrs. run time, and the brass looks brand new. I decap, then run in the tumbler, primer pockets are completely clean, inside cases as well. Brass comes out gold, brand new looking, no dust.