I took my S&W Governor out for its first firing last Friday. I shot .45 ACP's. When I went to clean the cylinder I discovered some rings of crud inside of each chamber just in front of where the mouth of the brass would be. I've tried everything that I can think of to get those rings off but nothing seems to be working. I've tried foam, a brass brush with bore scrubber, Remington bore cleaner, and finally lead removing cloth wrapped around a brass brush. The lead removing cloth seems to work to a fashion but it is taking a lot of working at it and I am hesitant to do too much with that method. I am afraid that I am damaging the cylinder. Any ideas would be appreciated.

I use a bore brush and wrap it with "copper" choir boy. After letting the cleaner soak I go at it with the brush. It may help to clean it shortly after shooting so the carbon doesn't get too hard.

I believe that is a chore boy, not a choir boy

This

Not This

Thanks for clearing that up! That being clarified I'm not sure that I can locate that product here in Colorado. I wonder if there is an alternate solution?

LOL!!

Thanks for the correction. You may be able to find it soomewhere. Do not use anything other than copper. No steel wool ect.

It's sold in almost any grocery store. I have to agree
, it does work very well also.