Load data for .458 Win.Mag. + 300gr Barnes TSX FN FB
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
Bullet:.458 | 300gr | TSX FN FB
Cartridge:.458 Win.Mag. load data
Case Length (L3):2.500" | 63.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.348" | 8.8 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. + 300gr Barnes TSX FN FB
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) |
|---|---|---|---|---|---|
| 74.0 gr | 3.200" | 24.0" | 2501 fps | ••• | |
| 77.0 gr | 3.200" | 24.0" | 2691 fps | ••• | |
| 68.0 gr | 3.200" | 24.0" | 2581 fps | ••• | |
| ••• | 3.200" | 24.0" | 2599 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.