Load data for .458 Win.Mag. + 400gr Speer Soft Point Flat Nose
Based on C.I.P., the max. allowed case length is 2.500 in / 63.50 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.
Based on C.I.P., the max. allowed case length is 2.500 in / 63.50 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.
Load Specifications
ImperialMetric
Cartridge:.458 Win.Mag. load data
Case Length (L3):2.500" | 63.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.355" | 9.0 mm
Case Capacity:95 gow | 6.16 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):62,366 psi | 4,300 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:Stabilizes in any common twist
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Community Loads for .458 Win.Mag. + 400gr Speer Soft Point Flat Nose
Real loads for this combination shared by our community. Charge weights are only fully visible with an active Pro licence.
| Powder | Charge (gr) | C.O.L. | Barrel Length | Velocity (fps) | Pressure (psi) |
|---|---|---|---|---|---|
| 70.0 gr | 3.115" | — | 2293 fps | ••• | |
| 74.0 gr | 3.115" | — | 2397 fps | ••• | |
| 70.5 gr | 3.115" | — | 2400 fps | ••• | |
| ••• | 3.115" | — | 2508 fps | ••• | |
| ••• | 3.115" | — | 2390 fps | ••• | |
| ••• | 3.115" | — | 2244 fps | ••• | |
| ••• | 3.115" | — | 2358 fps | ••• | |
| ••• | 3.115" | — | 2177 fps | ••• | |
| ••• | 3.115" | — | 2286 fps | ••• | |
| ••• | 3.115" | — | 2318 fps | ••• | |
| ••• | 3.115" | — | 2389 fps | ••• | |
| ••• | 3.115" | — | 2256 fps | ••• | |
| ••• | 3.115" | — | 2357 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.