.950 JDJ

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.950 JDJ
Production information
Country of origin	United States of America
Manufacturer(s)	SSK Industries
Designer(s)	J.D. Jones
Production began	2006
Production ended	2014
Technical specifications
Cartridge type	Rifle
Parent cartridge	20×102mm Vulcan
Overall length	4 in (100mm)
Case length	2.75 in (70mm)
Muzzle velocity	670 m/s (2,200 ft/s)
Other information
Other name(s)	24.1×100mm

The .950 JDJ is an extremely powerful, large-caliber rifle cartridge.

History

The bullet is based on the 20×102mm Vulcan cartridge used in the M61 Vulcan cannon. The .950 JDJ is most notably used in the SSK .950 rifle.

Design Details

Loaded cases are approximately the length of an empty .50 BMG case. The projectiles are custom made, and usually weigh about 3,600 grains (230 grams), equivalent to about 8.2 ounces or over half a pound.

Performance

The bullet is fired at 670 meters per second (2,200 feet per second), and has a muzzle energy of 38,685 foot-pounds (52,450 J). Even when fired from a 110-pound rifle, the free recoil energy would be over 200 foot-pounds (270 J) without a muzzle brake.