The .50 Remington Navy (13x21mmRF) is a American rimfire handgun cartridge.
History Introduced for the Remington Navy single-shot, rolling block pistol in 1865, the low-velocity round loaded a bullet over of black powder.
The rimfire version was replaced in 1866 by a centerfire equivalent. A Boxer-primed version remained commercially available until World War I.
The power of the .50 Remington was less than average, but the heavy bullet, even at comparatively low velocity, made it "a rather potent handgun round".
See also .50 caliber handguns List of cartridges by caliber List of handgun cartridges List of rimfire cartridges 13 mm caliber
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