Yes Eric, I posted on both forums and you did respond, thank you. I based my questions/post on the failure to get the small area to brown after repeated attempts. I did search both forums rewording my search title 2-3 times per forum to get some kind of an idea how to successfully retouch the needed area. Sometimes I wonder why posters don't search more vs starting a new thread that gets the same answers as posts that already addressed the question. Anyway, on neither forum after searching could I find any posts that really was geared to my need. Might have missed, can't advise.
I've performed multiple touchup's over the last 50 some years with cold blue, even bluing complete firearms, both long and handguns with what is called Belgium Blue where you heat the metal in hot boiling distilled water, take out, swab, card, reheat....go through the whole process again until the depth of blue is attained. Was using alot of what I used over the years to touchup my browned barrel but it wasn't taking. Not until taking the area down to bare steel and rebrowning did my touchup succeed, an idea I had from the beginning but didn't want to do unless necessary. Still suspect that some of the area I was attempting to rebrown retained some of the oil I used to season the browning even though I scrubbed the area pretty good with acetone. Anyway, worked out ok, learned alot about browning just in the 12" or so of barrel. Help alot when I brown my Kibler SMR barrel. Take care. CC