andyo5
Member
So basically any bore cleaner with a copper dissolving component will ruin the finish on your barrel?
No, that's not what I said.
Any solvent containing ammonia, according to S&W, will damage the nitrated finish in the bore. No ammonia, no problem.
So I guess I'll stick to MC7 and Hoppe's for this gun. They take longer than Sweet's, but they will still get the copper out.
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