Load Specifications
Load data in caliber .458 Win.Mag. with .458 | 350gr | Rhino Penetrator bullet and 44 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Shooters World AR Plus, SNPE Vectan SP 10 and Lovex D073.4.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 92% | 55,114 psi | 88% | 2405 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 43,526 psi | 70% | 2336 fps | 99.1% |
| Accurate 2460ᴾ | <<locked>> | 100% | 48,182 psi | 77% | 2421 fps | 97.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 31,647 psi | 51% | 2211 fps | 97% |
| Accurate LT-30 | <<locked>> | 98% | 55,216 psi | 89% | 2402 fps | 99.3% |
| Accurate LT-32 | <<locked>> | 98% | 55,869 psi | 90% | 2408 fps | 98.1% |
| ADI APS 450 | <<locked>> | 82% | 56,391 psi | 90% | 1788 fps | 100% |
| ADI AR 2205 | <<locked>> | 84% | 54,230 psi | 87% | 2280 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 53,635 psi | 86% | 2441 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 55,782 psi | 89% | 2536 fps | 99.4% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 40,176 psi | 64% | 2356 fps | 99.9% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 50,473 psi | 81% | 2448 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 96% | 55,956 psi | 90% | 2451 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 53,040 psi | 85% | 2398 fps | 99.3% |
| Hodgdon CFE BLK | <<locked>> | 84% | 56,420 psi | 90% | 2467 fps | 96.4% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 49,995 psi | 80% | 2461 fps | 98.7% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 51,213 psi | 82% | 2480 fps | 98.1% |
| Hodgdon H4198 | <<locked>> | 94% | 54,244 psi | 87% | 2405 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,227 psi | 50% | 1417 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 38,363 psi | 62% | 2333 fps | 97.3% |
| IMR 4198ᴾ | <<locked>> | 100% | 52,692 psi | 84% | 2425 fps | 100% |
| IMR 4227 | <<locked>> | 90% | 54,578 psi | 88% | 2379 fps | 100% |
| Lovex D060 | <<locked>> | 84% | 54,607 psi | 88% | 2415 fps | 100% |
| Lovex D073.4 | <<locked>> | 96% | 53,374 psi | 86% | 2490 fps | 97.6% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 48,443 psi | 78% | 2418 fps | 96% |
| Lovex S053 | <<locked>> | 92% | 55,724 psi | 89% | 2365 fps | 100% |
| Norma 200 | <<locked>> | 98% | 53,925 psi | 86% | 2470 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,038 psi | 50% | 1450 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 53,853 psi | 86% | 2408 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 49,734 psi | 80% | 2434 fps | 96.8% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 42,975 psi | 69% | 2329 fps | 96.4% |
| Shooters World AR Plus | <<locked>> | 96% | 53,374 psi | 86% | 2490 fps | 97.6% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 54,607 psi | 88% | 2415 fps | 100% |
| Shooters World SOCOM | <<locked>> | 84% | 55,825 psi | 90% | 2392 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 56,289 psi | 90% | 2231 fps | 100% |
| SNPE Vectan SP 10ᴾ | <<locked>> | 100% | 56,028 psi | 90% | 2539 fps | 98.7% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 51,706 psi | 83% | 2451 fps | 99.5% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 43,062 psi | 69% | 2270 fps | 96.3% |
| Somchem S335ᴾ | <<locked>> | 100% | 41,162 psi | 66% | 2270 fps | 97% |
| Vihtavuori N110 | <<locked>> | 86% | 55,274 psi | 89% | 2280 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 53,708 psi | 86% | 2398 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 48,515 psi | 78% | 2362 fps | 99.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 42,076 psi | 67% | 2277 fps | 98.7% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 34,389 psi | 55% | 2228 fps | 97.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 37,376 psi | 60% | 2152 fps | 98.7% |
| Accurate 2015 | <<locked>> | 86% | 28,239 psi | 45% | 2047 fps | 95.1% |
| Accurate 2460 | <<locked>> | 94% | 39,305 psi | 63% | 2283 fps | 95.3% |
| Accurate 2495 | <<locked>> | 96% | 27,731 psi | 44% | 2123 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 82% | 34,243 psi | 55% | 2077 fps | 95.4% |
| Accurate LT-32 | <<locked>> | 88% | 41,423 psi | 66% | 2201 fps | 95.2% |
| ADI APS 450 | <<locked>> | 80% | 54,244 psi | 87% | 1762 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 48,283 psi | 77% | 2208 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 33,040 psi | 53% | 2136 fps | 99.9% |
| ADI AR 2219 | <<locked>> | 86% | 35,346 psi | 57% | 2215 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 84% | 24,845 psi | 40% | 2011 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 27,427 psi | 44% | 2037 fps | 96.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 34,577 psi | 55% | 2133 fps | 98.7% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 34,171 psi | 55% | 2106 fps | 95.7% |
| Hodgdon CFE BLK | <<locked>> | 80% | 49,429 psi | 79% | 2369 fps | 95% |
| Hodgdon H322 | <<locked>> | 88% | 34,403 psi | 55% | 2195 fps | 95.1% |
| Hodgdon H335 | <<locked>> | 92% | 39,291 psi | 63% | 2297 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 35,491 psi | 57% | 2110 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,989 psi | 37% | 1263 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 31,966 psi | 51% | 2198 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 29,907 psi | 48% | 2041 fps | 97.8% |
| IMR 4227 | <<locked>> | 80% | 40,524 psi | 65% | 2188 fps | 100% |
| Lovex D060 | <<locked>> | 80% | 48,646 psi | 78% | 2333 fps | 100% |
| Lovex D073.4 | 67.5 gr | 90% | 43,207 psi | 69% | 2346 fps | 95.6% |
| Lovex D073.5 | <<locked>> | 98% | 45,092 psi | 72% | 2372 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 39,566 psi | 63% | 2156 fps | 100% |
| Norma 200 | <<locked>> | 80% | 30,937 psi | 50% | 2106 fps | 98.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,669 psi | 36% | 1293 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 39,682 psi | 64% | 2211 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 43,685 psi | 70% | 2346 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 96% | 38,348 psi | 61% | 2247 fps | 95.1% |
| Shooters World AR Plus | 67.5 gr | 90% | 43,207 psi | 69% | 2346 fps | 95.6% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 48,646 psi | 78% | 2333 fps | 100% |
| Shooters World SOCOM | <<locked>> | 80% | 49,037 psi | 79% | 2310 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 37,144 psi | 60% | 1995 fps | 100% |
| SNPE Vectan SP 10 | 65.8 gr | 88% | 37,666 psi | 60% | 2260 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 31,937 psi | 51% | 2116 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 38,159 psi | 61% | 2188 fps | 95% |
| Somchem S335 | <<locked>> | 94% | 34,374 psi | 55% | 2149 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 46,557 psi | 75% | 2178 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 33,243 psi | 53% | 2106 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 26,731 psi | 43% | 1969 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 88% | 29,617 psi | 47% | 2041 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 94% | 28,747 psi | 46% | 2103 fps | 95.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 44 powders for .458 Win.Mag. loaded with the .458 | 350gr | Rhino Penetrator. SNPE Vectan SP 10 delivers the highest muzzle velocity at 2,539 fps; across all powders the maximum-charge window runs from 1,417 fps to 2,539 fps. Accurate 2015 gives the best case fill at 100 %, and 44 of the 44 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. Accurate 2015, Accurate 2460, Accurate 2495 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Shooters World AR Plus, SNPE Vectan SP 10, Lovex D073.4 rank at the top here: for .458 Win.Mag. with the .458 | 350gr | Rhino Penetrator they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.