Peter M. Eick
Member

You are correct, a fouling cup is huge compared to the flame cut. I have a few examples, but frankly I would not add one to a revolver. Just use prudent reloading approach and the flame cut is a non-starter.
I shoot competitively, put a bunch of rds thru my guns and am pretty lazy about doing more than necessary cleaning. The buildup on the top strap above and around the barrel stays 'til it's bad enough to chip off in hunks with a brass scraper/chisel. It doesn't affect anything. Chambers, on the other hand, are thoroughly cleaned before each match.Do most of you remove thelead deposit above cylinder gap?... .Or is ok best left alone?