I have a TC Hawken in .45 purchased in the 70s and while cleaning yesterday the brush pulled off the cleaning rod. The piece that screws into the rod was still connected, the brush pulled out of that. The breach plug has never been off this rifle so I'll have a hard time removing it. I plugged the nipple and poured Hopes in the barrel in the hope that it will dissolve the copper brush enough to get it out with a jag. If you have any ideas please post.