Thanks,
I looked at a wet tumbler with the stainless pins but didn't want to spend the money. Looks like once I can swing it, I'll have to get one. I currently have a vibratory tumbler with fresh corn cob media. I was going to put extra polishing compound in but all that I had left was a couple drops. The brass looks fairly clean now but I'll have to keep an eye on it I guess. I wouldn't be so worried if these shells weren't so expensive and didn't have such a lead time.