|This article relies largely or entirely upon a single source. (August 2009)|
|Type||Derringer / Handgun|
|Place of origin||22x20px United States|
|Designer||National Arms Company|
|Variants||.41-100, .41 Short Derringer, .41 Rimfire, .41 Long|
|Case type||Rimfire, straight|
|Bullet diameter||.405 in (Script error mm)|
|Neck diameter||.406 in (Script error mm)|
|Base diameter||.406 in (Script error mm)|
|Rim diameter||.468 in (Script error mm)|
|Case length||.467 in (Script error mm)|
|Overall length||.913 in (Script error mm)|
|130 gr (Script error g) Lead||425 ft/s (Script error m/s)||52 ft·lbf (Script error J)|
| Test barrel length: 3"|
Source(s): "Cartridges of the World"
The .41 Rimfire Cartridge was first introduced by the National Arms Company in 1863 and was also known as the .41 Short and the .41-100. In most designations like this, the second number refers to the black powder load, though in this case it means "41 hundredths of an inch". According to "Cartridges of the World," the .41 Rimfire consisted of a 130 grain (8.4 g) lead bullet propelled by 13 grains (0.8 g) of black powder in its original load. The round produced a muzzle velocity of 425 feet per second (Script error m/s) and a muzzle energy of 52 foot-pounds force (Script error J). In contrast, modern low-powered smokeless cartridges produce considerably more energy: .380 ACP (200 ft·lbf), .22 LR (100 ft·lbf).
Cartridges of the World states that when fired at a hard object, such as a tree, from a distance of 15 yards (Script error m) or more, the bullet often bounces off. Reportedly, when shot at a target more than 20 yards away, the shooter hears two distinct reports; First the gun being fired; and second, the lead bullet striking the target. The .41 Short was created with the intention that it be used in a small, single-shot derringer, which likely is the reason for the very low ballistics (most derringers were and are chambered for cartridges that were not originally intended to be used in such a small weapon). Remington Arms began producing their famous Remington Model 95 over/under double barrel derringer chambered for the .41 Rimfire cartridge in 1866.
A National Arms .41 Rimfire derringer was recovered from the battlefield of the Battle of Little Bighorn. Estate records reveal that it belonged to Brevet Major General George Armstrong Custer, the commander of the soldiers slain in the battle.Script error
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