Cartridge comparison
.30 Herrett vs .309 JDJ
.30 Herrett and .309 JDJ are both in the reference; see the full spec comparison below.
Side by side
| .30 Herrett | .309 JDJ | |
|---|---|---|
| Type | Pistol | Pistol |
| Introduced | 1972 | 1979 |
| Bullet diameter | 0.308″ | 0.308″ |
| Case length | 1.61″ | 2.2″ |
| Max pressure | 55,000 psi | 42,000 psi |
| Recoil | 13.6–14.5 ft·lb | 41.8–42.8 ft·lb |
| Effective range | 200 yd | 250 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.
Case profiles, to scale
Drawn to the same scale, so the proportions are true. Physical size varies with your screen.
