If the bore is fouled, it won't be hard carbon but possibly lead. I wouldn't run with the CLR on a rimfire. I'd probably give it a decent scrub with std solvent and a bronze brush.
If the bore is fouled, it won't be hard carbon but possibly lead. I wouldn't run with the CLR on a rimfire. I'd probably give it a decent scrub with std solvent and a bronze brush.
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