Load Specifications
Load data in caliber .458 Win.Mag. with .458 | 500gr | Frontier PH HPFB bullet and 62 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are SNPE Vectan SP 10, Shooters World AR Plus 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% | 56,434 psi | 90% | 1873 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 44,846 psi | 72% | 1831 fps | 99.9% |
| Accurate 2200 | <<locked>> | 96% | 55,100 psi | 88% | 1952 fps | 95.9% |
| Accurate 2230 | <<locked>> | 96% | 54,926 psi | 88% | 1959 fps | 96.2% |
| Accurate 2460ᴾ | <<locked>> | 100% | 49,661 psi | 80% | 1906 fps | 99.1% |
| Accurate 2495ᴾ | <<locked>> | 100% | 33,025 psi | 53% | 1752 fps | 99.2% |
| Accurate 2520ᴾ | <<locked>> | 100% | 42,917 psi | 69% | 1867 fps | 97.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 30,922 psi | 50% | 1729 fps | 96.4% |
| Accurate LT-30 | <<locked>> | 96% | 53,461 psi | 86% | 1847 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 96% | 54,027 psi | 87% | 1854 fps | 99.1% |
| ADI AR 2205 | <<locked>> | 84% | 55,695 psi | 89% | 1762 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 55,216 psi | 89% | 1896 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 53,853 psi | 86% | 1955 fps | 99.9% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 44,628 psi | 72% | 1841 fps | 96.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 41,510 psi | 67% | 1850 fps | 100% |
| Alliant Power Pro 1200-Rᴾ | <<locked>> | 100% | 50,314 psi | 81% | 1975 fps | 97.1% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 52,069 psi | 83% | 1913 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 94% | 54,404 psi | 87% | 1880 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 54,447 psi | 87% | 1880 fps | 100% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 48,283 psi | 77% | 1844 fps | 97.5% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 41,162 psi | 66% | 1854 fps | 96.2% |
| Hodgdon CFE BLK | <<locked>> | 82% | 54,360 psi | 87% | 1890 fps | 97.9% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 51,677 psi | 83% | 1932 fps | 99.8% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 52,591 psi | 84% | 1952 fps | 99.5% |
| Hodgdon H4198 | <<locked>> | 94% | 55,767 psi | 89% | 1877 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,676 psi | 51% | 1076 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 39,624 psi | 64% | 1844 fps | 99.3% |
| IMR 4198ᴾ | <<locked>> | 100% | 54,143 psi | 87% | 1886 fps | 100% |
| IMR 4227 | <<locked>> | 90% | 56,072 psi | 90% | 1841 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 44,628 psi | 72% | 1841 fps | 96.2% |
| Lovex D060 | <<locked>> | 84% | 56,043 psi | 90% | 1873 fps | 100% |
| Lovex D073.4 | <<locked>> | 96% | 55,013 psi | 88% | 1955 fps | 99.2% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 49,792 psi | 80% | 1906 fps | 98.1% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 37,681 psi | 60% | 1808 fps | 96.7% |
| Lovex S053 | <<locked>> | 90% | 54,070 psi | 87% | 1801 fps | 100% |
| Norma 200 | <<locked>> | 98% | 55,767 psi | 89% | 1929 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 40,089 psi | 64% | 1814 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,372 psi | 50% | 1099 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 55,405 psi | 89% | 1870 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 51,343 psi | 82% | 1916 fps | 98.7% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 44,396 psi | 71% | 1834 fps | 98.5% |
| Shooters World AR Plus | <<locked>> | 96% | 55,013 psi | 88% | 1955 fps | 99.2% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 56,043 psi | 90% | 1873 fps | 100% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 37,681 psi | 60% | 1808 fps | 96.7% |
| Shooters World SOCOM | <<locked>> | 82% | 53,708 psi | 86% | 1827 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 98% | 52,808 psi | 85% | 1893 fps | 97.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 54,694 psi | 88% | 1693 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 98% | 53,911 psi | 86% | 1959 fps | 99.6% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 53,388 psi | 86% | 1916 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 44,454 psi | 71% | 1785 fps | 98.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 35,549 psi | 57% | 1686 fps | 97.6% |
| Somchem S321ᴾ | <<locked>> | 100% | 48,095 psi | 77% | 1906 fps | 97.3% |
| Somchem S335ᴾ | <<locked>> | 100% | 42,395 psi | 68% | 1788 fps | 98.9% |
| Vihtavuori N110 | <<locked>> | 84% | 53,650 psi | 86% | 1729 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 55,274 psi | 89% | 1857 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 50,096 psi | 80% | 1847 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 43,395 psi | 70% | 1788 fps | 99.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 35,592 psi | 57% | 1759 fps | 99.3% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 38,392 psi | 62% | 1768 fps | 97.8% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 45,020 psi | 72% | 1844 fps | 96.4% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 36,883 psi | 59% | 1762 fps | 96.9% |
| Winchester 748ᴾ | <<locked>> | 100% | 43,149 psi | 69% | 1867 fps | 96.8% |
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% | 38,464 psi | 62% | 1686 fps | 99.8% |
| Accurate 2015 | <<locked>> | 80% | 24,366 psi | 39% | 1522 fps | 95.9% |
| Accurate 2200 | <<locked>> | 94% | 51,547 psi | 83% | 1913 fps | 95.2% |
| Accurate 2230 | <<locked>> | 94% | 51,242 psi | 82% | 1923 fps | 95.6% |
| Accurate 2460 | <<locked>> | 86% | 31,169 psi | 50% | 1667 fps | 95.2% |
| Accurate 2495 | <<locked>> | 86% | 20,929 psi | 34% | 1526 fps | 95% |
| Accurate 2520 | <<locked>> | 92% | 32,808 psi | 53% | 1726 fps | 95.3% |
| Accurate 4064 | <<locked>> | 98% | 29,080 psi | 47% | 1696 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 33,214 psi | 53% | 1601 fps | 97.2% |
| Accurate LT-32 | <<locked>> | 80% | 33,634 psi | 54% | 1601 fps | 95.2% |
| ADI AR 2205 | <<locked>> | 80% | 49,458 psi | 79% | 1706 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 34,171 psi | 55% | 1667 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 30,081 psi | 48% | 1644 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 96% | 39,566 psi | 63% | 1775 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 22,843 psi | 37% | 1532 fps | 97.6% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 41,742 psi | 67% | 1867 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 28,485 psi | 46% | 1608 fps | 98.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 35,781 psi | 57% | 1670 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 30,937 psi | 50% | 1594 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 92% | 38,261 psi | 61% | 1719 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 98% | 38,624 psi | 62% | 1818 fps | 95.5% |
| Hodgdon CFE BLK | <<locked>> | 80% | 50,995 psi | 82% | 1854 fps | 97.4% |
| Hodgdon H322 | <<locked>> | 80% | 27,688 psi | 44% | 1594 fps | 95% |
| Hodgdon H335 | <<locked>> | 84% | 31,444 psi | 50% | 1677 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 36,680 psi | 59% | 1657 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,206 psi | 37% | 955 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 26,136 psi | 42% | 1608 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 30,922 psi | 50% | 1601 fps | 99.5% |
| IMR 4227 | <<locked>> | 80% | 41,727 psi | 67% | 1699 fps | 100% |
| IMR 8208 XBR | <<locked>> | 96% | 39,566 psi | 63% | 1775 fps | 95% |
| Lovex D060 | <<locked>> | 80% | 49,763 psi | 80% | 1811 fps | 100% |
| Lovex D073.4 | 46.1 gr | 82% | 33,953 psi | 54% | 1703 fps | 95.4% |
| Lovex D073.5 | <<locked>> | 90% | 35,433 psi | 57% | 1732 fps | 95.1% |
| Lovex D073.6 | <<locked>> | 96% | 33,214 psi | 53% | 1742 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 40,872 psi | 66% | 1670 fps | 100% |
| Norma 200 | <<locked>> | 80% | 32,053 psi | 51% | 1654 fps | 99.6% |
| Norma 202 | <<locked>> | 92% | 31,372 psi | 50% | 1683 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,090 psi | 37% | 981 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 40,944 psi | 66% | 1722 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 34,983 psi | 56% | 1713 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 88% | 31,386 psi | 50% | 1647 fps | 95.3% |
| Shooters World AR Plus | 46.1 gr | 82% | 33,953 psi | 54% | 1703 fps | 95.4% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 49,763 psi | 80% | 1811 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 96% | 33,214 psi | 53% | 1742 fps | 95.4% |
| Shooters World SOCOM | <<locked>> | 80% | 50,343 psi | 81% | 1795 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 43,236 psi | 69% | 1788 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,203 psi | 61% | 1535 fps | 100% |
| SNPE Vectan SP 10 | 45.9 gr | 82% | 31,981 psi | 51% | 1680 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 29,370 psi | 47% | 1604 fps | 96.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 30,792 psi | 49% | 1598 fps | 95% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 28,152 psi | 45% | 1565 fps | 95% |
| Somchem S321 | <<locked>> | 94% | 39,334 psi | 63% | 1801 fps | 95.4% |
| Somchem S335 | <<locked>> | 86% | 27,978 psi | 45% | 1572 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 47,892 psi | 77% | 1677 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 34,403 psi | 55% | 1640 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 27,731 psi | 44% | 1552 fps | 98% |
| Vihtavuori N133 | <<locked>> | 80% | 24,265 psi | 39% | 1490 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 86% | 23,598 psi | 38% | 1539 fps | 95.5% |
| Vihtavuori N140 | <<locked>> | 92% | 30,153 psi | 48% | 1637 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 96% | 39,682 psi | 64% | 1775 fps | 95% |
| Vihtavuori N540 | <<locked>> | 96% | 32,518 psi | 52% | 1696 fps | 95.5% |
| Winchester 748 | <<locked>> | 96% | 38,000 psi | 61% | 1795 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 88 powders for .458 Win.Mag. loaded with the .458 | 500gr | Frontier PH HPFB. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 1,975 fps; across all powders the maximum-charge window runs from 1,076 fps to 1,975 fps. Accurate 2015 gives the best case fill at 100 %, and 88 of the 88 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. The 500.0 gr projectile in 0.458" calls for a 1:20.5 twist; slower twists will usually not stabilise this weight. 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. SNPE Vectan SP 10, Shooters World AR Plus, Lovex D073.4 rank at the top here: for .458 Win.Mag. with the .458 | 500gr | Frontier PH HPFB they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2206H, Alliant Reloder- TS 15.5, Alliant Reloder-15 burn incompletely and react more sensitively to barrel length and temperature. 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.