Load Specifications
Load data in caliber .458 Win.Mag. with .458 | 325gr | Hornady FTX bullet and 74 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, Alliant Reloder-7 and ReloadSwiss RS 36.
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>> | 94% | 55,651 psi | 89% | 2500 fps | 99.9% |
| Accurate 1680 | <<locked>> | 94% | 55,651 psi | 89% | 2500 fps | 99.9% |
| Accurate 2015ᴾ | <<locked>> | 100% | 40,408 psi | 65% | 2372 fps | 97.9% |
| Accurate 2015ᴾ | <<locked>> | 100% | 40,408 psi | 65% | 2372 fps | 97.9% |
| Accurate LT-30ᴾ | <<locked>> | 100% | 55,347 psi | 89% | 2490 fps | 98.8% |
| Accurate LT-30ᴾ | <<locked>> | 100% | 55,347 psi | 89% | 2490 fps | 98.8% |
| Accurate LT-32ᴾ | <<locked>> | 100% | 56,014 psi | 90% | 2493 fps | 97.2% |
| Accurate LT-32ᴾ | <<locked>> | 100% | 56,014 psi | 90% | 2493 fps | 97.2% |
| Accurate No. 11 FS | <<locked>> | 82% | 54,505 psi | 87% | 2451 fps | 100% |
| Accurate No. 11 FS | <<locked>> | 82% | 54,505 psi | 87% | 2451 fps | 100% |
| ADI APS 450 | <<locked>> | 82% | 55,941 psi | 90% | 1850 fps | 100% |
| ADI APS 450 | <<locked>> | 82% | 55,941 psi | 90% | 1850 fps | 100% |
| ADI AR 2205 | <<locked>> | 86% | 55,158 psi | 88% | 2382 fps | 100% |
| ADI AR 2205 | <<locked>> | 86% | 55,158 psi | 88% | 2382 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 53,287 psi | 85% | 2536 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 53,287 psi | 85% | 2536 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 52,243 psi | 84% | 2579 fps | 98.3% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 52,243 psi | 84% | 2579 fps | 98.3% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 37,521 psi | 60% | 2392 fps | 99.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 37,521 psi | 60% | 2392 fps | 99.2% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 47,094 psi | 76% | 2493 fps | 99.6% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 47,094 psi | 76% | 2493 fps | 99.6% |
| Alliant Reloder-7 | <<locked>> | 98% | 56,072 psi | 90% | 2546 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 98% | 56,072 psi | 90% | 2546 fps | 100% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 53,388 psi | 86% | 2487 fps | 98.8% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 53,388 psi | 86% | 2487 fps | 98.8% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 46,862 psi | 75% | 2500 fps | 97.4% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 46,862 psi | 75% | 2500 fps | 97.4% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 47,906 psi | 77% | 2516 fps | 96.5% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 47,906 psi | 77% | 2516 fps | 96.5% |
| Hodgdon H4198 | <<locked>> | 96% | 54,418 psi | 87% | 2493 fps | 98.3% |
| Hodgdon H4198 | <<locked>> | 96% | 54,418 psi | 87% | 2493 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,705 psi | 49% | 1467 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,705 psi | 49% | 1467 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 49,734 psi | 80% | 2477 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 49,734 psi | 80% | 2477 fps | 100% |
| IMR 4227 | <<locked>> | 92% | 54,882 psi | 88% | 2477 fps | 100% |
| IMR 4227 | <<locked>> | 92% | 54,882 psi | 88% | 2477 fps | 100% |
| Lovex D060 | <<locked>> | 86% | 55,172 psi | 88% | 2513 fps | 100% |
| Lovex D060 | <<locked>> | 86% | 55,172 psi | 88% | 2513 fps | 100% |
| Lovex D063 | <<locked>> | 82% | 55,172 psi | 88% | 2497 fps | 100% |
| Lovex D063 | <<locked>> | 82% | 55,172 psi | 88% | 2497 fps | 100% |
| Lovex D073.4 | <<locked>> | 98% | 53,243 psi | 85% | 2575 fps | 96.7% |
| Lovex D073.4 | <<locked>> | 98% | 53,243 psi | 85% | 2575 fps | 96.7% |
| Lovex S053 | <<locked>> | 94% | 55,622 psi | 89% | 2464 fps | 100% |
| Lovex S053 | <<locked>> | 94% | 55,622 psi | 89% | 2464 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 53,548 psi | 86% | 2566 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 53,548 psi | 86% | 2566 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,443 psi | 49% | 1503 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,443 psi | 49% | 1503 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 54,128 psi | 87% | 2507 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 54,128 psi | 87% | 2507 fps | 100% |
| Shooters World AR Plus | <<locked>> | 98% | 53,243 psi | 85% | 2575 fps | 96.7% |
| Shooters World AR Plus | <<locked>> | 98% | 53,243 psi | 85% | 2575 fps | 96.7% |
| Shooters World Blackout | <<locked>> | 82% | 55,172 psi | 88% | 2497 fps | 100% |
| Shooters World Blackout | <<locked>> | 82% | 55,172 psi | 88% | 2497 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 55,172 psi | 88% | 2513 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 55,172 psi | 88% | 2513 fps | 100% |
| Shooters World SOCOM | <<locked>> | 86% | 56,420 psi | 90% | 2490 fps | 100% |
| Shooters World SOCOM | <<locked>> | 86% | 56,420 psi | 90% | 2490 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 56,188 psi | 90% | 2323 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 56,188 psi | 90% | 2323 fps | 100% |
| SNPE Vectan SP 10ᴾ | <<locked>> | 100% | 52,286 psi | 84% | 2579 fps | 97.4% |
| SNPE Vectan SP 10ᴾ | <<locked>> | 100% | 52,286 psi | 84% | 2579 fps | 97.4% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 48,414 psi | 78% | 2493 fps | 98.6% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 48,414 psi | 78% | 2493 fps | 98.6% |
| Vihtavuori N110 | <<locked>> | 88% | 55,477 psi | 89% | 2379 fps | 100% |
| Vihtavuori N110 | <<locked>> | 88% | 55,477 psi | 89% | 2379 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 53,417 psi | 86% | 2493 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 53,417 psi | 86% | 2493 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 45,469 psi | 73% | 2408 fps | 99.2% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 45,469 psi | 73% | 2408 fps | 99.2% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 39,465 psi | 63% | 2316 fps | 97.3% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 39,465 psi | 63% | 2316 fps | 97.3% |
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% | 35,288 psi | 57% | 2192 fps | 97.5% |
| Accurate 1680 | <<locked>> | 80% | 35,288 psi | 57% | 2192 fps | 97.5% |
| Accurate 2015 | <<locked>> | 92% | 31,488 psi | 50% | 2201 fps | 95.3% |
| Accurate 2015 | <<locked>> | 92% | 31,488 psi | 50% | 2201 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 86% | 36,535 psi | 59% | 2198 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 86% | 36,535 psi | 59% | 2198 fps | 95.1% |
| Accurate LT-32 | <<locked>> | 94% | 46,978 psi | 75% | 2369 fps | 95.5% |
| Accurate LT-32 | <<locked>> | 94% | 46,978 psi | 75% | 2369 fps | 95.5% |
| Accurate No. 11 FS | <<locked>> | 80% | 51,024 psi | 82% | 2408 fps | 100% |
| Accurate No. 11 FS | <<locked>> | 80% | 51,024 psi | 82% | 2408 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 53,809 psi | 86% | 1824 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 53,809 psi | 86% | 1824 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 46,093 psi | 74% | 2270 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 46,093 psi | 74% | 2270 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 30,864 psi | 49% | 2175 fps | 99.4% |
| ADI AR 2207 | <<locked>> | 80% | 30,864 psi | 49% | 2175 fps | 99.4% |
| ADI AR 2219 | <<locked>> | 90% | 37,753 psi | 61% | 2339 fps | 95% |
| ADI AR 2219 | <<locked>> | 90% | 37,753 psi | 61% | 2339 fps | 95% |
| Alliant AR-Comp | <<locked>> | 88% | 26,237 psi | 42% | 2119 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 88% | 26,237 psi | 42% | 2119 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 84% | 28,848 psi | 46% | 2152 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 84% | 28,848 psi | 46% | 2152 fps | 95.7% |
| Alliant Reloder-7 | 54.2 gr | 80% | 32,503 psi | 52% | 2169 fps | 97.4% |
| Alliant Reloder-7 | 54.2 gr | 80% | 32,503 psi | 52% | 2169 fps | 97.4% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 36,419 psi | 58% | 2228 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 36,419 psi | 58% | 2228 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 94% | 38,812 psi | 62% | 2359 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 94% | 38,812 psi | 62% | 2359 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 96% | 41,974 psi | 67% | 2421 fps | 95.1% |
| Hodgdon H335 | <<locked>> | 96% | 41,974 psi | 67% | 2421 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 86% | 40,393 psi | 65% | 2280 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 86% | 40,393 psi | 65% | 2280 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,568 psi | 36% | 1309 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,568 psi | 36% | 1309 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 28,297 psi | 45% | 2073 fps | 96.2% |
| IMR 4198 | <<locked>> | 80% | 28,297 psi | 45% | 2073 fps | 96.2% |
| IMR 4227 | <<locked>> | 80% | 38,392 psi | 62% | 2234 fps | 99.7% |
| IMR 4227 | <<locked>> | 80% | 38,392 psi | 62% | 2234 fps | 99.7% |
| Lovex D060 | <<locked>> | 80% | 46,412 psi | 74% | 2388 fps | 99.8% |
| Lovex D060 | <<locked>> | 80% | 46,412 psi | 74% | 2388 fps | 99.8% |
| Lovex D063 | <<locked>> | 80% | 51,837 psi | 83% | 2454 fps | 100% |
| Lovex D063 | <<locked>> | 80% | 51,837 psi | 83% | 2454 fps | 100% |
| Lovex D073.4 | <<locked>> | 94% | 46,122 psi | 74% | 2474 fps | 95.2% |
| Lovex D073.4 | <<locked>> | 94% | 46,122 psi | 74% | 2474 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 37,434 psi | 60% | 2208 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 37,434 psi | 60% | 2208 fps | 100% |
| Norma 200 | <<locked>> | 80% | 28,790 psi | 46% | 2136 fps | 96.6% |
| Norma 200 | <<locked>> | 80% | 28,790 psi | 46% | 2136 fps | 96.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,205 psi | 36% | 1339 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,205 psi | 36% | 1339 fps | 100% |
| ReloadSwiss RS 36 | 54.5 gr | 80% | 37,405 psi | 60% | 2260 fps | 99.6% |
| ReloadSwiss RS 36 | 54.5 gr | 80% | 37,405 psi | 60% | 2260 fps | 99.6% |
| Shooters World AR Plus | 70.5 gr | 94% | 46,122 psi | 74% | 2474 fps | 95.2% |
| Shooters World AR Plus | 70.5 gr | 94% | 46,122 psi | 74% | 2474 fps | 95.2% |
| Shooters World Blackout | <<locked>> | 80% | 51,837 psi | 83% | 2454 fps | 100% |
| Shooters World Blackout | <<locked>> | 80% | 51,837 psi | 83% | 2454 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 46,412 psi | 74% | 2388 fps | 99.8% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 46,412 psi | 74% | 2388 fps | 99.8% |
| Shooters World SOCOM | <<locked>> | 80% | 46,514 psi | 75% | 2362 fps | 99.9% |
| Shooters World SOCOM | <<locked>> | 80% | 46,514 psi | 75% | 2362 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 35,273 psi | 57% | 2051 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 35,273 psi | 57% | 2051 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 42,830 psi | 69% | 2434 fps | 95.4% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 42,830 psi | 69% | 2434 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 33,881 psi | 54% | 2234 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 33,881 psi | 54% | 2234 fps | 95% |
| Vihtavuori N110 | <<locked>> | 80% | 44,135 psi | 71% | 2241 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 44,135 psi | 71% | 2241 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 31,082 psi | 50% | 2149 fps | 99.9% |
| Vihtavuori N120 | <<locked>> | 80% | 31,082 psi | 50% | 2149 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 86% | 29,907 psi | 48% | 2119 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 86% | 29,907 psi | 48% | 2119 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 94% | 33,040 psi | 53% | 2192 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 94% | 33,040 psi | 53% | 2192 fps | 95.4% |
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 74 powders for .458 Win.Mag. loaded with the .458 | 325gr | Hornady FTX. ADI AR 2219 delivers the highest muzzle velocity at 2,579 fps; across all powders the maximum-charge window runs from 1,467 fps to 2,579 fps. Accurate 2015 gives the best case fill at 100 %, and 74 of the 74 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 49–90 %, leaving at least 10 % headroom. Accurate 2015, Accurate 2015, Accurate LT-30 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, Alliant Reloder-7, ReloadSwiss RS 36 rank at the top here: for .458 Win.Mag. with the .458 | 325gr | Hornady FTX 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.