For cleaning after a range session, what's wrong with good old HOT soapy water (I just use dish soap) in a 5 gallon bucket? It's cheaper than all the other stuff already mentioned, and all my ML's come out squeeky clean with just the hot soapy water and a bore mop. I can see this stuff as a field expedient cleaning method to prevent rusting if one can't do the full out hot soapy water cleaning right away, but plain drugstore 91% alcohol and windex work well too, and are probably cheaper and are usually readily available at any drug or grocery store and have other uses around the house. I'm not sold on the high-priced BP cleaners.

Mike