Re: Questions - cleaning solvents/techniques
Ditch the barnes, and get some Boretech Elliminator. It contains no ammonia is 100% barrel safe and cleans copper out much faster than cr-10.
When I clean a new custom barrel during brake in it takes about 3 patches, 15 minutes apart to get 90% of the copper out. ussually another 3-4 to get the stuborn stuff, with no brushing. It will eat your brass jag, turning the patch blue, so it takes a little bit of reading your patches to know when you got it all out. The borescope dosen't lie.