Cartridge comparison
7-30 Waters vs 7mm JDJ
7-30 Waters and 7mm JDJ are both in the reference; see the full spec comparison below.
Side by side
| 7-30 Waters | 7mm JDJ | |
|---|---|---|
| Type | Rifle | Pistol |
| Introduced | 1984 | 1978 |
| Bullet diameter | 0.284″ | 0.284″ |
| Case length | 2.0402″ | 1.9″ |
| Max pressure | 45,000 psi | 42,000 psi |
| Recoil | 12–16 ft·lb | — |
| Effective range | 250 yd | 200 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.