View Full Version : Montana Copper Killer

December 5th, 2011, 04:14 PM
Anyone use this product?? If so, your thoughts please. I wear Hoppe's 9 for aftershave, so loyalty statements don't help. Looking for something to really clean the copper fouling from the bore. I use Butch's Bore Cleaner, but I'm looking for something that does a better job more quickly. :usaflag:

December 5th, 2011, 05:18 PM
Industrial strength ammonia