Yet another who leaves the rings around the cylinder mouths of my 686 (a plus). My reason is that they will come right back the very next time I fire a load. I do not accept carbon buildup in the flutes, however. There I use Leadaway cloth and my fingernails.
I have long wiped my revolvers down inside & out (except grips) with Breakfree CLP before a range session. Most of the dirt & powder residue wipe off after. I was sorry when I got lazy & skipped it. Our range officer adopted it for the dept for the next qualification... Better to prevent it than try to scrub it off after.
I just use a clean microfiber towel after shooting. I don't want it too clean else, someone may call it a "safe queen"! That gets the majority of powder off of it.
Whatever you do, do not use steel wool, unless it is stainless steel wool. It will result in corrosion.
I clean with a bronze brush. It removes most of it. I don't worry about a little discoloration.
John
Guys, went down to Wally World this morning, back in the Automotive Department & found a 5 ounce can of NEVR-DULL for $ 4.47. Came home & tore off a small piece.. used it on the "donuts" and whata job. Took them all off that Hoppes #9 would not remove. The ones in my picture on page one are all gone. Thanks a million for the recommendations. It really works.
Carl !