I have used a number of case cleaning methods over the years. Just got a Thumler Tumbler and 5 pounds of SS pins. Add water, 1/4 tsp. lemi-shine and dish soap and brass comes out better than new. Clean inside and out. Primer pockets are surgically clean.
I have had some range brass that looked absolutely terrible, tarnished, oxidized and it came out like factory new. I have found it takes 2 hours for .38 / .357 / .44 / .45 cases and 4 hours for my .270 . If you have nickle plated cases, do not run them much longer then 90 minutes or the pins will start chipping off the nickel plate.
Will never go back to the vibrator and cobbs or walnet shells. Have a magnet handy though because some of the pins will get away and end up in the bottom of the sink.
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