Earlier today I received a box of range brass from another ARF member. The box contained about 250 dirty .40 cases and a small ziploc containing 35 pieces of wet-tumbled .380 Auto brass.
Not just any wet-tumbled pistol brass but the cleanest, shiniest, most gleaming brass I have ever seen. Amazing bling-ness
His pistol brass routine is to do a basic cleaning in an ultrasonic unit using Lyman ultrasonic cleaner (alternative: dry tumble in walnut). Then after depriming/resizing the brass goes into a HFT tumbler with Dishwashing soap, Meguiar's "Deep Crystal" Car Wash, and a rather high ratio of pins to brass. He says he runs this for about six hours. He is not using Lemishine.
The results are obviously spectacular.
Off to the auto parts store to get some of this car wash soap. I want to try this.