I don't know your circumstances and can't make your decisions, but I would leave it just like it is. Had you not inherited it, how would you have acquired a snubby? Would you have? I would deal with the snubby question as if the inheritance had never happened and keep your grandfather's revolver as a home defense revolver, a memento, and the classic that it is.
Use It Up, Wear It Out,
Make It Do, Or Do Without