I use a frankford arsenal wet tumbler that I got on sale at Cabelas. I've already cleaned several 5 gal buckets full of brass using it. It only comes with a few pounds of stainless steel pins and I thought that wasn't enough so I bought a few more lbs of guntap stainless media. I do between 5 and 7 lbs of brass at a time and I use 1 teaspoon ( not tablespoon ) of regular blue dawn dish soap and 1 teaspoon lemi shine. Then after they are done I use a Cabelas hand crank media separator to get the pins separated from the brass. I keep the brass inside that media separator basket, but I open it up and run water over it in my bathtub so it rinses off the soap residue. Then I transfer the brass into a $20 harbor freight food dehydrator on the 2nd or 3rd shelf and let them dry over night. I found that the brass gets too hot on the bottom shelf and will cause the plastic trays to warp so that's why I use the 2nd or 3rd shelf instead. The bottom shelf just acts as an empty spacer. After I rinse the stainless steel pins I use frankford arsenal media release magnet to transfer them back into the tumbler.
Here's a picture of some 223 brass I cleaned
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Not mine. Just a picture I found online of someone using the same harbor freight dehydrator.