Just thought I'd point something out.
Our good friends at Numrich have free on line schematics for many fine firearms including S&W.
Here is the schematic for the old Model 10. Notice that there's only 88 listed parts and several of those are variations on the same part.
Now hee is the much more modern Model 686 and it has an incredible 90 numbered parts. So it is much more complicated than the old gun.
Here's a thread from the High Road a related gun forum
In it a poster describes his own gun smithing experience on a model ten. You'll need to be a member to see the pictures.
Finally here's a video from Youtube. The guy makes working on a revolver look easy.