What Ya'll need is a copy of The Standard Catalog of S&W's by Supica & Nahas.
it is an excellent reference book and less than a box of shells
. I have all three additions and if you only have ONE S&W revolver
you should not be without it
. You Guys are wearing me and my Book out
looking up all your revolvers here..They are Cheap, Get ya one
..Here is a Link to one.
"Yeah, though I walk through the Valley of the Shadow of Death, ... I shall Fear no Evil, as I carry with me My Loaded S&W"..