.38 Special
The .38 Special, also commonly known as .38 S&W Special, .38 Smith & Wesson Special, .38 Spl, .38 Spc, or 9x29mmR is a rimmed, centerfire cartridge designed by Smith & Wesson.
The .38 Special was the standard service cartridge for the majority of... Wikipedia
Caliber: .357 inches
Bullet diameter: .357 in (9.1 mm)
Case capacity: 23.4 gr H2O (1.52 cm3)
Designed: 1898
Maximum CUP: 15,000 CUP
Parent case: .38 Long Colt
Produced: 1898–present