BSA asked me a while back if my JOC 270 was still coppering up. I hadn't shot it lately but I took it out today, fired 15 rounds, brought it home and ran a patch of Hoppe's through it and let it sit a while, ran two dry patches though the bore and checked...still coppering.
So, I ran some Butch's Bore Shine through it, no dice. I don't mind a little copper but to let it just keep building and adhering to the lands is not good. I'm about over trying to keep it out as it's a no win situation.
