I went to an auction and bought 2 large boxes. There are bags of jacketed and what looks like copper plated bullets. Mice had gotten into the bags and some of the bullets were corroded pretty bad. I put them in a vibrating tumbler and cleaned them, but they still have black and gray spotted stains on them. Will that affect the bullet if I load them. I have new brass to load them into. The brass is what I bid on, the bullets were a plus that I did not see. All the brass is in new condition.