Cartridge comparison
20mm Vulcan vs .950 JDJ
20mm Vulcan and .950 JDJ are both in the reference; see the full spec comparison below.
Side by side
| 20mm Vulcan | .950 JDJ | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1956 | 2005 |
| Bullet diameter | 0.7874″ | 0.95″ |
| Case length | 4.0157″ | 2.75″ |
| Max pressure | 65,000 psi | 45,000 psi |
| Recoil | 150–200 ft·lb | 120–160 ft·lb |
| Effective range | 2000 yd | 1000 yd |
Highlighted cells hold the clear edge where both sides have a number. Every figure is a range maximum from the reference; typical loads run lower.