Cartridge comparison
.375/303 Westley Richards Accelerated Express vs 7.7x58mm Japanese
.375/303 Westley Richards Accelerated Express and 7.7x58mm Japanese are both in the reference; see the full spec comparison below.
Side by side
| .375/303 Westley Richards Accelerated Express | 7.7x58mm Japanese | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1905 | 1940 |
| Bullet diameter | 0.311″ | 0.3118″ |
| Case length | 2.5″ | 2.2701″ |
| Max pressure | 38,000 psi | 50,000 psi |
| Recoil | 19.4–22.3 ft·lb | 15–19.9 ft·lb |
| Effective range | 300 yd | 550 yd |
| SAAMI | Not SAAMI standardized | Not SAAMI standardized |
| CIP | Not standardized | Not standardized |
| Obsolete | 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.
