As far as the brass, I?d say wet tumbling is definitely the way to go. I have the same kit mentioned above that is supposed to do 1K pieces of 223 so I figured it should handle around 1500 pieces or maybe even 2,000 pieces of handgun brass at a time. I think my kit was on sale for about $100 or $125 so cheaper than the cement mixer if you don?t mind running several smaller batches.