Hello everyone, I currently get around 4-6 full five gallon buckets of brass every week from work. I just purchased a used 3.5 cubic foot concrete mixer off of letgo. I'm trying to figure out which media would suit me best. I have around 150 gallons of brass accumulated right now. If I go the wet tumbling way, I have to decap all the brass beforehand and then I would have to dry it all afterwards. But the ss pins never go bad. If I dry tumble, how long does the walnut or concob media last for?