Phew! I am so glad that I dropped the dry stuff for plain hot water, a bit of lemon-shine and a drop or two of dishwashing liquid and a few steel pins! Max I go is hour and half, 90 minutes, good rinse and let 'em dry on a towel for a day or so. I still have two "tumblers", a really neat RCBS and a brand X that sit idle now. No dust, no worry about how long, and brass is clean. Harbor Freight sold me the two canister wet thing about 2 years back, and I could not be more pleased. Sometimes I don't even use any soaps...just the pins and clean water. Works pretty well, and rinse time is negligible.