Cartridge comparison
.43 Spanish Reformado vs .458 Winchester Magnum
.43 Spanish Reformado and .458 Winchester Magnum are both in the reference; see the full spec comparison below.
.458 Winchester Magnum2,090 fps
Zero
Velocity only, no drag model: this is the shape gravity alone gives the advertised velocity. Drag would steepen it. The tool below solves real loads through their published G1 or G7 model.
Open in Ballistic CompareSide by side
| .43 Spanish Reformado | .458 Winchester Magnum | |
|---|---|---|
| Type | Rifle | Rifle |
| Introduced | 1871 | 1956 |
| Bullet diameter | 0.454″ | 0.4579″ |
| Case length | 2.26″ | 2.5″ |
| Velocity | — | 1,950–2,090 fps |
| Energy | — | 4,221–4,849 ft·lb |
| Max pressure | 18,000 psi | 60,000 psi |
| Recoil | 18–27.8 ft·lb | 60–80 ft·lb |
| Effective range | 300 yd | 150 yd |
| SAAMI | Not SAAMI standardized | SAAMI standardized |
| CIP | Not standardized | CIP 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.
