I don't,know, but from the short revolver barrel, maybe around 800-900 ft/sec. It really makes little difference what the MV was, as shooting anyone with it is not likely to stop them, unless from a hit in the eyeball, etc. Victims were much more likely to die later from infection. Lots of CW soldiers and officers carried them, but more as a morale builder than anything else. Certainly not for its effectiveness in combat. There were no other cartridge revolvers widely available back then other than the S&W No. 1, and that's the only reason for its popularity.
