I’m thinking about buying some surplus 8mm Mauser ammo for a good price, I’m just afraid it might be a little dirty, what would be the best way to go about cleaning the outside of it? A few months ago I had some old 223 with dried out gunk stuck on it and I cleaned it with a paper towel and some WD-40, however some folks say lube and oils can deactivate primers, I’m not sure how much I believe this since firearms are oil living machines. Regardless I’d like to know what some of y’all with more experience have to say about this ordeal. When it comes to potential ammo cleaning stuff I have on hand, I have: WD-40, Winchester break free, hopps no.9, some 300 grit and 2000 grit sand paper. Unfortunately I don’t have a tumbling bowl or some steel wool on hand.