I didnt know about wet tumbling. I will need to read about that. Thank you.To reduce the lead styphnate and elemental lead dust in the dry media? Sure. But ultrasonic + dry tumbling sounds like a lot of work to do what wet tumbling does quickly and relatively easily. The hassle with the wet tumbler is mainly to do with the pins. If you don't care about making the primer pockets and insides look new, just want the outside polished and clean, you can use a wet tumbler without any pins. With the pins, a rotary media separator helps a lot, as does a magnet.