Load Specifications
Load data in caliber .458 Win.Mag. with .457 | 500gr | Frontier PH PHL bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, SNPE Vectan SP 10 and Hodgdon H335.
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>> | 88% | 56,231 psi | 90% | 1939 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 52,605 psi | 84% | 1972 fps | 100% |
| Accurate 2200 | <<locked>> | 92% | 55,506 psi | 89% | 2037 fps | 97.4% |
| Accurate 2230 | <<locked>> | 92% | 55,767 psi | 89% | 2047 fps | 97.8% |
| Accurate 2460 | <<locked>> | 98% | 54,926 psi | 88% | 2028 fps | 99.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 40,422 psi | 65% | 1906 fps | 100% |
| Accurate 2520ᴾ | <<locked>> | 100% | 51,227 psi | 82% | 2024 fps | 99.7% |
| Accurate 4064ᴾ | <<locked>> | 100% | 37,652 psi | 60% | 1886 fps | 99% |
| Accurate LT-30 | <<locked>> | 92% | 53,287 psi | 85% | 1916 fps | 100% |
| Accurate LT-32 | <<locked>> | 92% | 53,766 psi | 86% | 1926 fps | 99.7% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 48,457 psi | 78% | 1985 fps | 97.1% |
| ADI AR 2207 | <<locked>> | 92% | 56,275 psi | 90% | 1965 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 54,679 psi | 88% | 2034 fps | 100% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 51,619 psi | 83% | 1998 fps | 98.7% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 48,805 psi | 78% | 1995 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 55,564 psi | 89% | 2106 fps | 98.9% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 38,595 psi | 62% | 1880 fps | 96% |
| Alliant Reloder-10x | <<locked>> | 96% | 53,345 psi | 86% | 1985 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 54,882 psi | 88% | 1949 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 54,549 psi | 87% | 1952 fps | 100% |
| Bofors RP3ᴾ | <<locked>> | 100% | 37,449 psi | 60% | 1883 fps | 95.8% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 55,143 psi | 88% | 1995 fps | 99.4% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 48,704 psi | 78% | 2018 fps | 98.8% |
| Hodgdon CFE223ᴾ | <<locked>> | 100% | 55,013 psi | 88% | 2116 fps | 97.6% |
| Hodgdon H322 | <<locked>> | 98% | 56,173 psi | 90% | 2051 fps | 100% |
| Hodgdon H335 | <<locked>> | 96% | 53,751 psi | 86% | 2037 fps | 100% |
| Hodgdon H4198 | <<locked>> | 90% | 55,622 psi | 89% | 1949 fps | 100% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 48,617 psi | 78% | 1995 fps | 97.8% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 43,859 psi | 70% | 1969 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,503 psi | 52% | 1132 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 47,718 psi | 77% | 1962 fps | 97.4% |
| IMR 3031ᴾ | <<locked>> | 100% | 46,253 psi | 74% | 1995 fps | 100% |
| IMR 4198 | <<locked>> | 96% | 55,056 psi | 88% | 1959 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 55,666 psi | 89% | 1903 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 43,279 psi | 69% | 1955 fps | 96.2% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 51,619 psi | 83% | 1998 fps | 98.7% |
| Lovex D073.4 | <<locked>> | 92% | 56,289 psi | 90% | 2041 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 98% | 54,926 psi | 88% | 2031 fps | 99.5% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 45,353 psi | 73% | 1972 fps | 99.2% |
| Lovex S053 | <<locked>> | 86% | 54,317 psi | 87% | 1864 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 50,749 psi | 81% | 1942 fps | 97.4% |
| Lovex S062ᴾ | <<locked>> | 100% | 41,800 psi | 67% | 1896 fps | 97.2% |
| Norma 200 | <<locked>> | 92% | 53,838 psi | 86% | 1972 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 47,195 psi | 76% | 1949 fps | 98.1% |
| Norma 202ᴾ | <<locked>> | 100% | 46,905 psi | 75% | 1965 fps | 99.7% |
| Norma 203Bᴾ | <<locked>> | 100% | 41,408 psi | 66% | 1919 fps | 95.7% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 50,763 psi | 81% | 2021 fps | 97.4% |
| Ramshot X-Terminator | <<locked>> | 98% | 54,186 psi | 87% | 2005 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,460 psi | 52% | 1161 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 55,506 psi | 89% | 1932 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 55,579 psi | 89% | 2034 fps | 99.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 37,623 psi | 60% | 1900 fps | 96.6% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 51,517 psi | 83% | 1982 fps | 99.8% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 44,643 psi | 72% | 1913 fps | 97.7% |
| Shooters World AR Plus | <<locked>> | 92% | 56,289 psi | 90% | 2041 fps | 99.8% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 45,353 psi | 73% | 1972 fps | 99.2% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 41,800 psi | 67% | 1896 fps | 97.2% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 53,316 psi | 85% | 1978 fps | 98.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 54,940 psi | 88% | 1752 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 54,940 psi | 88% | 2041 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 54,578 psi | 88% | 1995 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 46,847 psi | 75% | 1965 fps | 96.7% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 50,879 psi | 82% | 1926 fps | 99.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 40,727 psi | 65% | 1827 fps | 99.5% |
| Somchem S321ᴾ | <<locked>> | 100% | 56,246 psi | 90% | 2067 fps | 99.3% |
| Somchem S335ᴾ | <<locked>> | 100% | 48,994 psi | 79% | 1929 fps | 99.9% |
| Somchem S341ᴾ | <<locked>> | 100% | 49,052 psi | 79% | 1978 fps | 96.9% |
| Vihtavuori N120 | <<locked>> | 92% | 56,333 psi | 90% | 1926 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 54,085 psi | 87% | 1949 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 49,951 psi | 80% | 1923 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 41,872 psi | 67% | 1903 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 44,541 psi | 71% | 1916 fps | 99.6% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 35,592 psi | 57% | 1804 fps | 95.9% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 52,417 psi | 84% | 2001 fps | 98.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 42,685 psi | 68% | 1913 fps | 99.1% |
| Winchester 748ᴾ | <<locked>> | 100% | 50,154 psi | 80% | 2031 fps | 99.2% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 45,948 psi | 74% | 1969 fps | 97.1% |
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% | 43,366 psi | 70% | 1808 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 28,558 psi | 46% | 1657 fps | 98.5% |
| Accurate 2200 | <<locked>> | 86% | 45,759 psi | 73% | 1923 fps | 95.6% |
| Accurate 2230 | <<locked>> | 84% | 42,003 psi | 67% | 1886 fps | 95.1% |
| Accurate 2460 | <<locked>> | 80% | 30,182 psi | 48% | 1703 fps | 96.2% |
| Accurate 2495 | <<locked>> | 80% | 21,176 psi | 34% | 1572 fps | 96.4% |
| Accurate 2520 | <<locked>> | 84% | 29,791 psi | 48% | 1732 fps | 95.7% |
| Accurate 4064 | <<locked>> | 88% | 25,875 psi | 41% | 1683 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 37,289 psi | 60% | 1726 fps | 99.1% |
| Accurate LT-32 | <<locked>> | 80% | 37,666 psi | 60% | 1729 fps | 97.7% |
| ADI AR 2206H | <<locked>> | 94% | 40,393 psi | 65% | 1880 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 39,233 psi | 63% | 1785 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 34,490 psi | 55% | 1781 fps | 98.6% |
| ADI Benchmark 8208 | <<locked>> | 88% | 35,926 psi | 58% | 1791 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 26,194 psi | 42% | 1667 fps | 99.6% |
| Alliant Power Pro 1200-R | 52.1 gr | 86% | 37,739 psi | 61% | 1880 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 36,376 psi | 58% | 1847 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,040 psi | 53% | 1736 fps | 99.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 40,553 psi | 65% | 1791 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,288 psi | 57% | 1722 fps | 99% |
| Bofors RP3 | <<locked>> | 98% | 35,143 psi | 56% | 1847 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 84% | 34,519 psi | 55% | 1729 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 88% | 32,706 psi | 52% | 1795 fps | 95.2% |
| Hodgdon CFE223 | <<locked>> | 94% | 44,991 psi | 72% | 1995 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 31,720 psi | 51% | 1736 fps | 97.9% |
| Hodgdon H335 | 51.8 gr | 80% | 31,691 psi | 51% | 1742 fps | 96.9% |
| Hodgdon H4198 | <<locked>> | 80% | 41,118 psi | 66% | 1785 fps | 99.3% |
| Hodgdon H4895 | <<locked>> | 92% | 38,116 psi | 61% | 1854 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 38,740 psi | 62% | 1893 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,960 psi | 38% | 1010 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 39,798 psi | 64% | 1857 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 25,164 psi | 40% | 1647 fps | 96.4% |
| IMR 4198 | <<locked>> | 80% | 34,853 psi | 56% | 1722 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 46,746 psi | 75% | 1814 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 40,698 psi | 65% | 1919 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 88% | 35,926 psi | 58% | 1791 fps | 95.4% |
| Lovex D073.4 | <<locked>> | 80% | 37,115 psi | 60% | 1814 fps | 97.6% |
| Lovex D073.5 | <<locked>> | 82% | 31,966 psi | 51% | 1736 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 86% | 28,398 psi | 46% | 1716 fps | 95.1% |
| Lovex S053 | <<locked>> | 80% | 45,847 psi | 74% | 1778 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 40,219 psi | 64% | 1811 fps | 95% |
| Lovex S062 | <<locked>> | 94% | 34,751 psi | 56% | 1795 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 37,333 psi | 60% | 1785 fps | 100% |
| Norma 201 | <<locked>> | 90% | 34,911 psi | 56% | 1778 fps | 95.3% |
| Norma 202 | <<locked>> | 82% | 26,963 psi | 43% | 1657 fps | 95.2% |
| Norma 203B | <<locked>> | 98% | 39,001 psi | 63% | 1886 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 94% | 41,742 psi | 67% | 1906 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 90% | 41,974 psi | 67% | 1860 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,062 psi | 39% | 1037 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 46,369 psi | 74% | 1844 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 31,517 psi | 51% | 1716 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 35,288 psi | 57% | 1857 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 28,877 psi | 46% | 1657 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 92% | 35,128 psi | 56% | 1778 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 37,115 psi | 60% | 1814 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 28,398 psi | 46% | 1716 fps | 95.1% |
| Shooters World Precision | <<locked>> | 94% | 34,751 psi | 56% | 1795 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 38,203 psi | 61% | 1795 fps | 95.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 42,424 psi | 68% | 1631 fps | 100% |
| SNPE Vectan SP 10 | 51.8 gr | 80% | 34,737 psi | 56% | 1788 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,591 psi | 54% | 1736 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 41,408 psi | 66% | 1893 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 27,876 psi | 45% | 1604 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 25,512 psi | 41% | 1575 fps | 95.5% |
| Somchem S321 | <<locked>> | 84% | 33,199 psi | 53% | 1772 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 27,122 psi | 43% | 1608 fps | 96.2% |
| Somchem S341 | <<locked>> | 96% | 43,018 psi | 69% | 1903 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 39,407 psi | 63% | 1755 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,792 psi | 51% | 1677 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 27,630 psi | 44% | 1614 fps | 98% |
| Vihtavuori N135 | <<locked>> | 80% | 22,974 psi | 37% | 1581 fps | 96.6% |
| Vihtavuori N140 | <<locked>> | 84% | 27,412 psi | 44% | 1647 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 98% | 33,475 psi | 54% | 1772 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 88% | 35,563 psi | 57% | 1785 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 86% | 27,862 psi | 45% | 1673 fps | 95.2% |
| Winchester 748 | <<locked>> | 86% | 32,111 psi | 51% | 1772 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 94% | 37,971 psi | 61% | 1857 fps | 95.1% |
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 77 powders for .458 Win.Mag. loaded with the .457 | 500gr | Frontier PH PHL. Hodgdon CFE223 delivers the highest muzzle velocity at 2,116 fps; across all powders the maximum-charge window runs from 1,132 fps to 2,116 fps. Accurate 2015 gives the best case fill at 100 %, and 77 of the 77 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 500.0 gr projectile in 0.457" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Accurate 2520 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. Alliant Power Pro 1200-R, SNPE Vectan SP 10, Hodgdon H335 rank at the top here: for .458 Win.Mag. with the .457 | 500gr | Frontier PH PHL they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.