Cartridge comparison
.577 Express 2 1/2" vs .585 Nyati
.577 Express 2 1/2" and .585 Nyati are both in the reference; see the full spec comparison below.
Side by side
| .577 Express 2 1/2" | .585 Nyati | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1875 | 1994 |
| Bullet diameter | 0.584″ | 0.585″ |
| Case length | 2.5″ | 2.8″ |
| Max pressure | 18,000 psi | 47,000 psi |
| Recoil | 106.9–112.2 ft·lb | 230.4–295.8 ft·lb |
| Effective range | 150 yd | 100 yd |
| SAAMI | Not SAAMI standardized | Not SAAMI standardized |
| CIP | Not standardized | Not standardized |
| Obsolete | Obsolete | — |
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.
