Nice Mountain gun. The Factory "N" frame target grips just don't feel right in my hands. As unaesthetic as they are, the Hogue Monogrip fits like a glove!
A light N frame 45 Colt would be a grail gun for me. We had a Colt new Service in 45 Colt and I loved that gun. It loved 250 Gr SWC's over 8.5 grains of Unique. Shot them into tight groups despite a pitted spot in the bore halfway down the barrel.