I was helping my MIL today clean her pistols and rifles that are in storage. She had left 20 rounds of .243 in her rifle belt from her hunting days, and they now have a slimy, green band on them from being in the leather. I got the leather cleaned and oiled asap. Is there any way to get the green stuff off and save the rounds, or should I break them down and save them for reloading? I can wipe it off with a cloth for the most part.