What is 38 webley?

.38 Webley is a cartridge designed for revolvers, initially introduced in the United Kingdom in 1877. The cartridge case measures 0.775 inches in length and utilizes a .361-inch diameter lead bullet. It was widely used by British and Commonwealth armed forces as well as police forces until the mid-20th century. The .38 Webley cartridge was often used in revolvers such as the Webley Revolver and Smith & Wesson Model 10. The cartridge’s popularity waned after the introduction of more powerful cartridges such as the .357 Magnum.