Load Specifications
Load data in caliber .458 Win.Mag. with .458 | 500gr | Hornady FMJ RN ENC bullet and 73 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, Accurate 2230 and Shooters World AR Plus.
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% | 54,404 psi | 87% | 1906 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 50,401 psi | 81% | 1936 fps | 100% |
| Accurate 2200 | <<locked>> | 92% | 53,577 psi | 86% | 1998 fps | 96.7% |
| Accurate 2230 | <<locked>> | 92% | 53,388 psi | 86% | 2005 fps | 97.1% |
| Accurate 2460ᴾ | <<locked>> | 100% | 56,289 psi | 90% | 2021 fps | 99.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 38,377 psi | 62% | 1867 fps | 100% |
| Accurate 2520ᴾ | <<locked>> | 100% | 48,892 psi | 78% | 1985 fps | 99.4% |
| Accurate 4064ᴾ | <<locked>> | 100% | 35,839 psi | 57% | 1847 fps | 98.5% |
| Accurate LT-30 | <<locked>> | 94% | 54,737 psi | 88% | 1913 fps | 100% |
| Accurate LT-32 | <<locked>> | 94% | 55,274 psi | 89% | 1923 fps | 99.7% |
| ADI AR 2205 | <<locked>> | 82% | 56,275 psi | 90% | 1814 fps | 100% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 46,688 psi | 75% | 1946 fps | 96.4% |
| ADI AR 2207 | <<locked>> | 92% | 54,433 psi | 87% | 1932 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 56,202 psi | 90% | 2031 fps | 100% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 49,908 psi | 80% | 1959 fps | 98.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 46,775 psi | 75% | 1959 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 53,316 psi | 85% | 2064 fps | 98.4% |
| Alliant Reloder-10x | <<locked>> | 98% | 54,723 psi | 88% | 1982 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 92% | 56,115 psi | 90% | 1942 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 56,275 psi | 90% | 1949 fps | 100% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 53,330 psi | 86% | 1955 fps | 99% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 46,557 psi | 75% | 1975 fps | 98.3% |
| Hodgdon CFE223ᴾ | <<locked>> | 100% | 52,823 psi | 85% | 2067 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 98% | 53,780 psi | 86% | 2008 fps | 100% |
| Hodgdon H335 | <<locked>> | 98% | 55,071 psi | 88% | 2031 fps | 99.9% |
| Hodgdon H4198 | <<locked>> | 90% | 53,911 psi | 86% | 1916 fps | 100% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 46,847 psi | 75% | 1955 fps | 97.1% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 42,337 psi | 68% | 1926 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,401 psi | 52% | 1119 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 46,137 psi | 74% | 1923 fps | 96.7% |
| IMR 3031ᴾ | <<locked>> | 100% | 44,324 psi | 71% | 1955 fps | 100% |
| IMR 4198 | <<locked>> | 98% | 56,304 psi | 90% | 1952 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 54,056 psi | 87% | 1870 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 49,908 psi | 80% | 1959 fps | 98.2% |
| Lovex D073.4 | <<locked>> | 92% | 53,838 psi | 86% | 1998 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 98% | 52,823 psi | 85% | 1991 fps | 99.2% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 43,018 psi | 69% | 1926 fps | 98.7% |
| Lovex S053 | <<locked>> | 88% | 55,767 psi | 89% | 1860 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 49,066 psi | 79% | 1903 fps | 96.7% |
| Lovex S062ᴾ | <<locked>> | 100% | 40,089 psi | 64% | 1857 fps | 96.5% |
| Norma 200 | <<locked>> | 94% | 55,027 psi | 88% | 1969 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 45,411 psi | 73% | 1909 fps | 97.6% |
| Norma 202ᴾ | <<locked>> | 100% | 45,049 psi | 72% | 1926 fps | 99.4% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 48,834 psi | 78% | 1975 fps | 96.7% |
| Ramshot X-Terminatorᴾ | <<locked>> | 100% | 55,796 psi | 89% | 2001 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,126 psi | 52% | 1145 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 53,766 psi | 86% | 1903 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 53,476 psi | 86% | 1995 fps | 99.5% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 49,414 psi | 79% | 1942 fps | 99.6% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 42,888 psi | 69% | 1870 fps | 97% |
| Shooters World AR Plus | <<locked>> | 92% | 53,838 psi | 86% | 1998 fps | 99.6% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 43,018 psi | 69% | 1926 fps | 98.7% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 40,089 psi | 64% | 1857 fps | 96.5% |
| Shooters World Tactical Rifle | <<locked>> | 96% | 54,969 psi | 88% | 1975 fps | 98.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 56,304 psi | 90% | 1745 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 52,808 psi | 85% | 2001 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 55,970 psi | 90% | 1988 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 45,194 psi | 72% | 1923 fps | 95.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 49,197 psi | 79% | 1890 fps | 99.5% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,320 psi | 63% | 1788 fps | 99.1% |
| Somchem S321ᴾ | <<locked>> | 100% | 54,143 psi | 87% | 2028 fps | 99% |
| Somchem S335ᴾ | <<locked>> | 100% | 47,239 psi | 76% | 1893 fps | 99.8% |
| Somchem S341ᴾ | <<locked>> | 100% | 47,253 psi | 76% | 1936 fps | 96.1% |
| Vihtavuori N110 | <<locked>> | 82% | 54,969 psi | 88% | 1781 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 54,520 psi | 87% | 1896 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 55,347 psi | 89% | 1942 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 48,182 psi | 77% | 1886 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,176 psi | 64% | 1867 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 42,685 psi | 68% | 1877 fps | 99.2% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 50,459 psi | 81% | 1959 fps | 98.3% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 41,031 psi | 66% | 1873 fps | 98.6% |
| Winchester 748ᴾ | <<locked>> | 100% | 48,095 psi | 77% | 1988 fps | 98.7% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 44,121 psi | 71% | 1926 fps | 96.4% |
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% | 42,018 psi | 67% | 1775 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 27,441 psi | 44% | 1621 fps | 98% |
| Accurate 2200 | <<locked>> | 88% | 47,050 psi | 75% | 1919 fps | 95.4% |
| Accurate 2230 | 54.3 gr | 86% | 43,250 psi | 69% | 1886 fps | 95% |
| Accurate 2460 | <<locked>> | 80% | 28,935 psi | 46% | 1667 fps | 95.4% |
| Accurate 2495 | <<locked>> | 80% | 20,088 psi | 32% | 1532 fps | 95.4% |
| Accurate 2520 | <<locked>> | 86% | 30,400 psi | 49% | 1729 fps | 95.6% |
| Accurate 4064 | <<locked>> | 90% | 26,208 psi | 42% | 1677 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 36,274 psi | 58% | 1693 fps | 98.7% |
| Accurate LT-32 | <<locked>> | 80% | 36,680 psi | 59% | 1696 fps | 97.1% |
| ADI AR 2205 | <<locked>> | 80% | 53,127 psi | 85% | 1785 fps | 100% |
| ADI AR 2206H | <<locked>> | 96% | 41,191 psi | 66% | 1873 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 37,826 psi | 61% | 1752 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 33,243 psi | 53% | 1745 fps | 98% |
| ADI Benchmark 8208 | <<locked>> | 90% | 36,651 psi | 59% | 1785 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 25,295 psi | 41% | 1634 fps | 99.3% |
| Alliant Power Pro 1200-R | 51.4 gr | 88% | 38,798 psi | 62% | 1877 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,836 psi | 51% | 1703 fps | 99.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,363 psi | 63% | 1762 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,026 psi | 55% | 1686 fps | 98.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 35,273 psi | 57% | 1722 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 90% | 33,620 psi | 54% | 1791 fps | 95.1% |
| Hodgdon CFE223 | <<locked>> | 96% | 46,354 psi | 74% | 1988 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 30,516 psi | 49% | 1696 fps | 97.2% |
| Hodgdon H335 | <<locked>> | 80% | 30,603 psi | 49% | 1706 fps | 96.2% |
| Hodgdon H4198 | <<locked>> | 80% | 39,972 psi | 64% | 1752 fps | 98.9% |
| Hodgdon H4895 | <<locked>> | 94% | 38,986 psi | 63% | 1850 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 39,581 psi | 63% | 1886 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,786 psi | 38% | 994 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 40,712 psi | 65% | 1850 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 24,163 psi | 39% | 1608 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 33,837 psi | 54% | 1693 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 45,252 psi | 73% | 1781 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 36,651 psi | 59% | 1785 fps | 95.3% |
| Lovex D073.4 | <<locked>> | 80% | 35,534 psi | 57% | 1775 fps | 96.9% |
| Lovex D073.5 | <<locked>> | 84% | 32,851 psi | 53% | 1736 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 90% | 30,922 psi | 50% | 1749 fps | 95.7% |
| Lovex S053 | <<locked>> | 80% | 44,541 psi | 71% | 1752 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 43,627 psi | 70% | 1837 fps | 95.5% |
| Lovex S062 | <<locked>> | 96% | 35,447 psi | 57% | 1788 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 35,882 psi | 58% | 1752 fps | 100% |
| Norma 201 | <<locked>> | 92% | 35,549 psi | 57% | 1772 fps | 95.1% |
| Norma 202 | <<locked>> | 84% | 27,557 psi | 44% | 1654 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 96% | 42,902 psi | 69% | 1903 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 92% | 43,207 psi | 69% | 1857 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,685 psi | 38% | 1020 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 44,860 psi | 72% | 1811 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 32,271 psi | 52% | 1716 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 82% | 29,515 psi | 47% | 1654 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 94% | 35,795 psi | 57% | 1772 fps | 95.1% |
| Shooters World AR Plus | 50 gr | 80% | 35,534 psi | 57% | 1775 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 90% | 30,922 psi | 50% | 1749 fps | 95.7% |
| Shooters World Precision | <<locked>> | 96% | 35,447 psi | 57% | 1788 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 39,320 psi | 63% | 1791 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,263 psi | 66% | 1604 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 33,460 psi | 54% | 1749 fps | 97.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,445 psi | 52% | 1703 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 42,482 psi | 68% | 1890 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 28,645 psi | 46% | 1601 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 26,121 psi | 42% | 1572 fps | 95.4% |
| Somchem S321 | <<locked>> | 88% | 36,361 psi | 58% | 1808 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 26,092 psi | 42% | 1575 fps | 95.4% |
| Somchem S341 | <<locked>> | 98% | 44,396 psi | 71% | 1900 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 80% | 51,924 psi | 83% | 1755 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 38,029 psi | 61% | 1722 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,705 psi | 49% | 1644 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 80% | 26,731 psi | 43% | 1581 fps | 97.4% |
| Vihtavuori N135 | <<locked>> | 80% | 22,104 psi | 35% | 1545 fps | 95.8% |
| Vihtavuori N140 | <<locked>> | 86% | 27,992 psi | 45% | 1644 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 90% | 36,535 psi | 59% | 1781 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 88% | 28,485 psi | 46% | 1670 fps | 95.1% |
| Winchester 748 | <<locked>> | 88% | 32,953 psi | 53% | 1768 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 96% | 38,972 psi | 62% | 1854 fps | 95% |
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 73 powders for .458 Win.Mag. loaded with the .458 | 500gr | Hornady FMJ RN ENC. Hodgdon CFE223 delivers the highest muzzle velocity at 2,067 fps; across all powders the maximum-charge window runs from 1,119 fps to 2,067 fps. Accurate 2015 gives the best case fill at 100 %, and 73 of the 73 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 0.458" calls for a 1:23.5 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. Alliant Power Pro 1200-R, Accurate 2230, Shooters World AR Plus rank at the top here: for .458 Win.Mag. with the .458 | 500gr | Hornady FMJ RN ENC 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.