Dwight,
Doug is right on about the ammonia. Ammonia makes an excellent copper remover, but it is also corrosive. All the ammonia based copper cleaners warn about leaving it in the bore too long. Just plain water with a mild detergent as a wetting agent makes an excellent initial bore cleaner after firing corrosive ammunition. Some use Windex window cleaner as it has all the properties you are looking for.
As a precaution, whatever you use, check the bore for a couple of days after cleaning just to be sure.
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