Smith and Wesson introduced their .32 in 1878 as a black powder cartridge that would be effective at “card table” distances. It was a light self defense cartridge that required 9 grains of black powder. Since 1940, it has been used with smokeless powder. It remained popular in Europe and the United States for many years after firearms chambered to this round were extinct. The 32 S&W also carries great historical significant as it was chambered in the revolver that Leon Czolgosz used to shoot President William McKinley in 1901.