.41 Short

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.41 Short Rimfire
Type	Handgun
Place of origin	United States
Production history
Designer	National Arms Company
Designed	1863
Variants	.41-100, .41 Short Derringer, .41 Rimfire, .41 Long
Specifications
Case type	Rimmed, straight
Bullet diameter	.405 in (10.3 mm)
Neck diameter	.406 in (10.3 mm)
Base diameter	.406 in (10.3 mm)
Rim diameter	.468 in (11.9 mm)
Case length	.467 in (11.9 mm)
Overall length	.913 in (23.2 mm)
Primer type	Rimfire
Maximum pressure (CIP)	13,000 psi (90 MPa)
Ballistic performance
Bullet mass/type Velocity Energy 130 gr (8 g) Lead 425 ft/s (130 m/s) 52 ft⋅lbf (71 J)
Test barrel length: 3" Source(s): "Cartridges of the World"[1]

The .41 Short Rimfire, also known as the .41 Short, was first introduced by the National Arms Company in 1863.^{[citation needed]}

The .41 Short Rimfire 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 Short Rimfire in 1866.

In 1873, the slightly more powerful .41 Long (rimfire) and the .41 Short Colt (centerfire) was introduced in the Colt New Line pocket revolver.^[1]