For 6PPC and 6BR rifle brass I use the Harbor Freight two container tumbler, putting 50 cases in each. It solves the problem of peening the case mouths. To rinse I use a small one gallon plastic bucket, just dump every thing in and place under a running faucet in the laundry room, stir continually while kneading the brass and dumping the dirty water until the water is clear. Then I leave the bucket half full of water and remove the brass two at a time with the case mouths pointing down and giving a tap on the side of the bucket. Any pins will dislodge. This is all done under water. Then I just place them on a towel on top of the washer to remove the excess water before putting them in the dehydrator trays to dry them out.Yep, not cheap, but what is in this game.
Used to use a wire trash basket in a 5 gal.
Bucket on about a 45 dg.angle and rotate
Basket.