A Russian issued revolver ? The Red Army used semi-autos from the mid 1930s, first the Tokarev TT-33 using a 7.62mm cartridge, then the Makarov using the Soviet 9x18mm cartridge.
The last Russian issued military revolver AFAIK was the Nagant M1895. That was a fine weapon, where the cylinder moved forward just before the round fired in order to seal the cylinder gap. The 7.62 rimmed cartridge was odd, in that the bullet was completely enclosed by the brass case
Gun Jesus did a vid on the Nagant. The cylinder moving forward to seal did the job of sealing the gas, but the mechanism prevented rapid reloading. Probably not an issue if there were only a few fuzzy wuzzies to smite.