Cartridge comparison
.500 Jeffery vs .505 Gibbs
.500 Jeffery and .505 Gibbs are both in the reference; see the full spec comparison below.
Side by side
| .500 Jeffery | .505 Gibbs | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1920 | 1911 |
| Bullet diameter | 0.5098″ | 0.5051″ |
| Case length | 2.75″ | 3.15″ |
| Max pressure | 55,000 psi | 39,000 psi |
| Recoil | 75–95 ft·lb | 75–100 ft·lb |
| Effective range | 100 yd | 150 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.