Gentlemen, thank you. Hal, I'd be concerned about that, but here in Phoenix moisture / humidity is generally an unlikely issue. We've had an unusually large amount of rain this monsoon season, but the way this firearm is stored it is still unlikely to be the source of this problem. The plastic buildup seems logical though.
GreybeardB, what you say makes sense based upon what I saw. I was using Hoppe's No. 9 and copper solvent (Shooter's Choice, I believe), and the copper solvent appeared to be taking this stuff off very slowly, plus some elbow grease with a bronze bore brush. I thought I had taken it as far as I could, but perhaps soaking will lick the problem. Are you sure soaking overnight with copper solvent is safe? Seems like someone told me it is too strong for that length of time, but I probably misremembered that comment.
Thanks again.
[This message has been edited by Jeff Thomas (edited July 29, 1999).]
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