The Firing Line Forums - View Single Post - Could i be mistaking copper fouling for rust in the rifling at the muzzle of a rifle

Horseman · March 19, 2010, 08:10 PM

IMO it's probably copper. Use another type of copper cleaner being careful to remove all the sweets first (mixing copper cleaners is bad). In this case I'd get it all out to put your mind at ease and know it's not rust. I've found it's easiest to get to bare steel using 2 different copper solvents since they will usually get out copper the other left behind. I've had great luck with Gunslick foaming bore cleaner, Hoppes 9 Benchrest, Sweets, Butches and Barnes CR10.

Again I'm not recommending using 2 copper solvents on a regular basis. I've just found its the quickest way to get ALL the copper out. It's usually not necessary or beneficial to remove all the copper but in this case I wouldn't sleep right til I was sure it wasn't rust.

March 19, 2010, 08:10 PM	#9
Horseman Senior Member Join Date: February 1, 2006 Location: Midwest Posts: 1,067	IMO it's probably copper. Use another type of copper cleaner being careful to remove all the sweets first (mixing copper cleaners is bad). In this case I'd get it all out to put your mind at ease and know it's not rust. I've found it's easiest to get to bare steel using 2 different copper solvents since they will usually get out copper the other left behind. I've had great luck with Gunslick foaming bore cleaner, Hoppes 9 Benchrest, Sweets, Butches and Barnes CR10. Again I'm not recommending using 2 copper solvents on a regular basis. I've just found its the quickest way to get ALL the copper out. It's usually not necessary or beneficial to remove all the copper but in this case I wouldn't sleep right til I was sure it wasn't rust.