looking for any advice on tumbling brass. I use corncob media and some stuff called FLITZ polish. The problem is the fine dust seams to collect inside the brass. It gets so much in there sometimes it cant even be removed by washing it out with water. No to mention how much of a pain in the ass washing each piece of brass is. Is my corncob media to old? is my polishing media that i'm adding causing the dust problem, Funny thing is that i just bought some new walnut media and it has some kinda red polish on it. This stuff seams to get dusty and collect as well. The red residue inside the case is so bad that after washing three times it was still red in the case neck!!! any suggestions???? how bad is this dust if you leave it in there. Will it burn up with the gun powder??? will it burn dirty or not burn at all and leave behind an abrasive substance in the gun barrel????