The nice things about S&W revolvers is many many gunsmiths are very familiar with the S&W action and can work on it without any difficulty. Parts are easy to get hold of as well. I've had a couple older Smiths worked on in the past and it wasn't a big deal. Now Colt double action revolvers are a different story.
Those who beat their swords into plowshares usually end up plowing for those who didn't. Ben Franklin