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I have both the Frankford SS wet tumbler and the dry media one.
If I have a lot of brass or really dirty brass to process I Deprime (lee Universal de prime) then wet tumble with SS media and they look brand new, clean pockets and shiney inside etc. 1 1/2 to 2 hours

Then I lube, size, trim if necessary and then dry tumble with lizard walnut, a squirt of Frankford brass Polish and a ounce +- of mineral spirits to clean the brass and get that really polished look before priming and loading. Usually 1~2 hours if that long. I use the nitrile gloves for the prime through load stages to keep sweaty hands off them.

If it's just some load testing and a few cases that aren't gritty or dirty I follow the same routine without the wet SS tumble. Or just a 30 minute walnut knock the dirt off tumble.


Santa brought a bag of 500 lake city nato once fired.... They were nasty out of the bag. Two hours later they looked brand new from the stainless steel, Dawn and lemeshine wet treatment. Made them easy to sort damaged and head stamp lots. Small based sized with hornady case wax on the lower 1/3 and a cotton swabed neck on cheap rcbs partner press for "feel" and no stuck cases or hard motions needed.


For what it's worth the bench rest competition guys I know don't tumble brass..... But it never touches the ground. For me it is a OCD pride of workmanship deal. Don't know that the rifle cares.....