A buddy of mine came over and was helping me with reloading when he noticed my barrel looked gold colored from across the room. Well, he had me get some stuff called ioso that is a paste that is supposed to remove fouling. It barely works. ANyway, I heard amonia gets rid of it, so I tried it and it does work better. But what kind of damage can this pose to my trusty rifle? I only used it for 2 passes then quickly followed it with rem-oil. Any opinions? EJ