.950 JDJ

.950 JDJ
A .950 JDJ
Type	Rifle
Place of origin	United States
Production history
Designer	J. D. Jones
Manufacturer	SSK Industries/Knight Rifles
Specifications
Parent case	20×102mm Vulcan
Bullet diameter	0.950 in (24.1 mm)
Case length	2.75 in (70 mm)
Ballistic performance
Bullet mass/type Velocity Energy 3,600 gr (233 g) 2,200 ft/s (670 m/s) 38,685 ft⋅lbf (52,450 J)

The .950 JDJ (24.1×70mm) is an obsolete powerful large caliber rifle cartridge developed by American gunsmith and weapon designer J. D. Jones of SSK Industries.