I have been shooting 200 gr lswc Dardas cast bullets in front of 4.8 gr Bullseye, and for some odd reason they have leaded up the chambers of my 625. Even with the Brownells steel chamber brushes there is a little bit smeared at the end of the chambers. On the other hand, in the 1911 it is fine, and the bronze wool over brush technique gets the chamber clean. I haven't tried this yet with this gun. This occurred with 45ar brass and 45acp in clips.
Weird thing is, I've been shooting CB loads in all my sixguns, and this is the only one making a mess of the chambers. Even my 44 mag shooting 19 gr 2400 loads with 240 lswc looks better than this gun.
Any ideas?