EVERY Smith & Wesson revovler I've ever purchased, ranging in production dates from about 1910 to the mid 1980s, has benefitted GREATLY from action work on my part.
My Regulation Police 4" .32 Long, made probably about 1922, had perhaps the heaviest trigger pull I've ever encounted on an S&W.
Due to its age and the fact that it's an I frame there wasn't a tremendous amount that I could do for it, but I did what I could.
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.