Well lo and behold, my beloved 18-3 has a lead problem! Oddly, it is not in the barrel/bore but around the shank of the barrel where it protrudes into the cylinder window of the frame. The little space between the bottom of the top strap and the top of the shank of the barrel is clogged up with lead or maybe also lead and grease. It is hard. I don't want to damage my revolver by being overly aggressive cleaning the gunk off. I've currently got it soaking in Shooters Choice Lead Remover. I've been shooting this revolver pretty heavy since retiring (6/23) and just didn't notice the build up. Any ideas? Sincerely. bruce.