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I use Isopropyl alcohol 99% to remove crud and degrease. It doesnt smell and evaporates very fast + it's cheap! I use Hoppes #9 only for the barrel though; dont know how alcohol would do for copper/lead fooling in a barrel...
was using hopes #9 and I loved it, but constant complaining about the smell, I switched to froglube for everything and the complaining went away, I also like the product.