I have a S&W 629-1 that has had the full house treatment via MagNaPort International, that revolver is the smoothest and best shooting double action that I have ever held & shot, words simply fail in describing how good the feel of the gun is to me.
I am also the owner of a model 83 in 454 and would have no problem letting the above company, have their way with my five gun.
Picture of my MagNaPort enhanced 629