Just for reference, that is not the name of the cartridge. It is usually called generically as the .38-44 cartridge, which is just a heavily loaded .38 Special (MV is about 1100 ft/sec). Remington generally labeled it as the .38 Special (sometimes .38-44 is shown on early boxes) Hi-Speed, Winchester called it the .38 Special Super Speed, and Western called it the .38 Special Super-X. I think the Peters brand used the name .38 Special High Velocity, I don't remember for sure. The revolver itself is usually designated as the ".38/44" Heavy Duty or Outdoorsman, not ".38-44". In any event, the .38-44 cartridge has been off the commercial market for many years, but is easily duplicated by handloading. The .38 Special +P load has generally supplanted it, even though it is less powerful than the original .38-44 factory load.