I have tried dried, ultra sonic and wet with stainless steal pins. While no difference in reliability between the 3 methods, I find wet tumbling the best for me. I do de-prime on a separate single stage press prior to cleaning (can do 400 pieces in about 15 minutes) Overall wet tumbling makes the brass look like new. I can clean 300 pieces of 45 ACP or 450 pieces of 9 mm in 60 minutes. The brass is dried in a refurbish Black and Decker convention oven at 130 degrees for 60 minutes that I purchased for $25 at Ollies. Brass is then ready to reload.
I agree with prior comment about lead exposure with dry tumbling. There is risk of lead exposure that occurs with the inhaling the microscopic particles that occur with separation of the dry media from the brass. As far as the die sticking on station #2 of a Dillon 650, if you look at the flaring die you can fine tiny linear brass streaks that build up on the die. I polish the die with red compound and a dremel which takes about 2 minutes and can load 2000 pieces before any residual build up reoccurs.
