Shooter's Choice used to have a high ammonia content. That is what cut the primer salts in the corrosive ammo. Now that the enviro-nazis have gotten their hooks into gun solvents (Hoppe's was the first to cave, IIRC), I doubt you'll find anything so effective offered as an OTS product.
Butch's Bore Shine still has a slight amount of ammonia (at least, the last bottle I bought did), but nowhere near that of the original Shooter's Choice; that was some good stuff.
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