Great info! Ya gotta love those of us that are dedicated enough to do all that legwork, and gift us with the recovered data!Here is some info about the differences between abrasive bore cleaners.
http://forum.accurateshooter.com/threads/abrasive-bore-cleaner-specifications.3957645/
How do you guys figure out you have carbon (or anything for that matter) that isn't being removed with your normal routine? Borescope?