I have been browsing many threads about making your own SS tumbler. I had a 3/4 horse motor that I got for nothing, so I plan on giving it a go! The thing I am not sure about is what size to make the drum. I will be doing anything from 500 45 acp cases down to 25 260 cases. I was thinking of making the drum out of 6" pvc and making it 18" long. What would my capacity be on this? Also, is there a place where I can find how much brass weighs? Say like how many 260 Rem in a pound? One last question, what is the ratio of brass-media- water, and what is the best size pins to buy? I think that is all for now! Thanks!