The .500 No. 2 Express (also called the .577/.500 and, in Germany, 12.7mm British No. 2) is a British centerfire fire rifle cartridge. Designed as a black powder round in 1882 or 1883, it resembles the .577/.500 Magnum Nitro Express, but uses a shorter case; the two are not interchangeable. It was offered in single or double rifles, as well as a variety of Martini-based lever guns. The bullet is virtually the same as the .50 Sharps, and Lyman molds can be used to produce cast examples for reloading. Factory loads used about between 130-160 gr (8.4-10.4 g) of Fg.