OP hate to rain on your parade but if I had a S&W revolver listed on GB with a few good pics I would ignore your detailed questions. Why? Many reasons. Taking a bunch of pics to appease one potential buyer is a lot of work. In selling guns along with other things over the years I have learned a couple of things. Buyers act like buyers and tire kickers and pic collectors act like tire kickers and pic collectors. Sellers expect buyers to know what they want and how to appraise it. The more pics they want the less likely they are to buy the gun. They are looking for an excuse not to buy, maybe because they are scared to make a decision. Posing as a discriminating and picky collector gets them a lot of attention what is really what they are looking for. Don't be surprised if your questions get ignored.
You're totally assuming & speculative, additionally, shaming tactics on your part is low. I've found the opposite, the better condition the gun, the more pictures there are. You probably incorrectly refer to the chambers on a revolver as "charge holes" and call timing, "carry-up"....