.50 Remington Navy

The .50 Remington Navy is a .5 in American rimfire handgun cartridge.

Introduced for the Remington Navy revolver in 1865, the low-velocity round loaded a 290 gr bullet over 23 gr of black powder.

The rimfire version replaced in 1866 by a centerfire equivalent. A Boxer-primed version remained commercially available until World War One.

The power of the .50 Remington was not great, but the heavy bullet, even at comparatively low velocity, made it "a rather potent handgun round".