I used to do ALOT of handloading and chronographing back in the day (how about a 30-378Wthby with saboted 40g 22cal solid at 5200fps? woohoo) I loaded for old revolvers as well, one being a 1892 made S&W No 3 in 38-44Target(a very cool cartridge in many ways, google it to learn more), carved the cases out of 357 magnum. Anyway, always load light for 1800s handguns, and discovered in the process that below a certain speed your eye can see the travel of the bullet quite clearly. I determined the speed at which you can see the bullet travel to the target is 650fps. Actually kind of fun to do this and watch it arc over. BTW, Annie Oakley used a No 3 in 38-44 Target(among many others but she personally liked the No 3). My serial number is the same year as hers and only a few serial numbers off. Kinda neat. I have several other No 3s but this is my favorite.