The 32 S&W (S&W Short, S&W Long) was introduced in the 32 S&W Short version in 1873 (blackpowder); the 32 S&W Long cartridge was introduced as a smokeless cartridge in 1903. Both use a .315-inch bullet, so 32 S&W Short cartridges can be used in a 32 S&W Long revolver, but not vice versa. The 32 S&W is a mild cartridge with low recoil that has been very popular for personal defense. Since 1903 the majority of "32 S&W" revolvers are chambered to 32 S&W Long, which is readily available.
