I am in the market for a used revolver and want to make sure that i am testing the timin correctly. These are the techniques that I know to check the timing on a S&W.
1. If it is DA/SA, thumb cock the hammer on each cylinder. The cylinder stop should lock into the groove on the cylinder prior to the hammer locking into position for SA fire.
2. Load the cylinder with armorer's dummies. Dry fire the revolver on all six shots. Between each shot, check the cylinder to ensure that it is locked with the cylinder stop.
Are these techniques valid, is one better than the other, are there better ways to test? Thanks.