Load Specifications
Load data in caliber .458 Win.Mag. with .458 | 450gr | Woodleigh HS bullet and 71 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 SNPE Vectan SP 10.
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% | 55,114 psi | 88% | 2077 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 51,068 psi | 82% | 2106 fps | 100% |
| Accurate 2200 | <<locked>> | 92% | 54,375 psi | 87% | 2175 fps | 96.5% |
| Accurate 2230 | <<locked>> | 92% | 54,230 psi | 87% | 2182 fps | 96.9% |
| Accurate 2460 | <<locked>> | 98% | 53,490 psi | 86% | 2162 fps | 99.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 39,175 psi | 63% | 2031 fps | 99.9% |
| Accurate 2520ᴾ | <<locked>> | 100% | 49,835 psi | 80% | 2159 fps | 99.2% |
| Accurate 4064ᴾ | <<locked>> | 100% | 36,593 psi | 59% | 2008 fps | 98.3% |
| Accurate LT-30 | <<locked>> | 94% | 55,434 psi | 89% | 2083 fps | 100% |
| Accurate LT-32 | <<locked>> | 94% | 55,956 psi | 90% | 2093 fps | 99.6% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 47,369 psi | 76% | 2116 fps | 96.2% |
| ADI AR 2207 | <<locked>> | 92% | 55,201 psi | 89% | 2106 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 53,272 psi | 85% | 2172 fps | 100% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 50,560 psi | 81% | 2129 fps | 98% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 47,500 psi | 76% | 2133 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 54,215 psi | 87% | 2247 fps | 98.2% |
| Alliant Reloder-10x | <<locked>> | 98% | 55,419 psi | 89% | 2159 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 53,766 psi | 86% | 2087 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 53,476 psi | 86% | 2087 fps | 100% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 53,954 psi | 87% | 2129 fps | 98.8% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 47,282 psi | 76% | 2149 fps | 98.1% |
| Hodgdon CFE223ᴾ | <<locked>> | 100% | 53,592 psi | 86% | 2247 fps | 96.6% |
| Hodgdon H322 | <<locked>> | 98% | 54,679 psi | 88% | 2188 fps | 100% |
| Hodgdon H335 | <<locked>> | 98% | 55,840 psi | 90% | 2211 fps | 99.9% |
| Hodgdon H4198 | <<locked>> | 90% | 54,404 psi | 87% | 2087 fps | 99.9% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 47,500 psi | 76% | 2126 fps | 96.9% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 42,917 psi | 69% | 2093 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,314 psi | 52% | 1224 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 46,789 psi | 75% | 2093 fps | 96.4% |
| IMR 3031ᴾ | <<locked>> | 100% | 44,991 psi | 72% | 2129 fps | 99.9% |
| IMR 4198 | <<locked>> | 96% | 53,766 psi | 86% | 2096 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 54,592 psi | 88% | 2041 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 50,560 psi | 81% | 2129 fps | 98% |
| Lovex D073.4 | <<locked>> | 92% | 54,868 psi | 88% | 2178 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 98% | 53,519 psi | 86% | 2165 fps | 99% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 44,092 psi | 71% | 2100 fps | 98.5% |
| Lovex S053 | <<locked>> | 88% | 56,289 psi | 90% | 2031 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 49,632 psi | 80% | 2070 fps | 96.4% |
| Lovex S062ᴾ | <<locked>> | 100% | 40,654 psi | 65% | 2018 fps | 96.1% |
| Norma 200 | <<locked>> | 94% | 55,608 psi | 89% | 2142 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 46,166 psi | 74% | 2080 fps | 97.3% |
| Norma 202ᴾ | <<locked>> | 100% | 45,745 psi | 73% | 2093 fps | 99.2% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 49,371 psi | 79% | 2146 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 98% | 53,127 psi | 85% | 2136 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,387 psi | 52% | 1257 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 54,288 psi | 87% | 2073 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 54,215 psi | 87% | 2172 fps | 99.4% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 50,183 psi | 80% | 2116 fps | 99.5% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 43,352 psi | 70% | 2034 fps | 96.7% |
| Shooters World AR Plus | <<locked>> | 92% | 54,868 psi | 88% | 2178 fps | 99.5% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 44,092 psi | 71% | 2100 fps | 98.5% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 40,654 psi | 65% | 2018 fps | 96.1% |
| Shooters World Tactical Rifle | <<locked>> | 96% | 55,608 psi | 89% | 2146 fps | 98.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 54,027 psi | 87% | 1883 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 53,751 psi | 86% | 2182 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 53,417 psi | 86% | 2136 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 49,705 psi | 80% | 2057 fps | 99.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,784 psi | 64% | 1946 fps | 98.9% |
| Somchem S321ᴾ | <<locked>> | 100% | 54,940 psi | 88% | 2205 fps | 98.8% |
| Somchem S335ᴾ | <<locked>> | 100% | 47,979 psi | 77% | 2060 fps | 99.7% |
| Somchem S341ᴾ | <<locked>> | 100% | 47,950 psi | 77% | 2103 fps | 95.8% |
| Vihtavuori N110 | <<locked>> | 82% | 55,361 psi | 89% | 1946 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 55,230 psi | 89% | 2067 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 55,927 psi | 90% | 2116 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 48,762 psi | 78% | 2054 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,698 psi | 65% | 2031 fps | 99.9% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 43,439 psi | 70% | 2041 fps | 99.1% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 51,169 psi | 82% | 2129 fps | 98.1% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 41,771 psi | 67% | 2037 fps | 98.5% |
| Winchester 748ᴾ | <<locked>> | 100% | 48,791 psi | 78% | 2162 fps | 98.5% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 44,889 psi | 72% | 2093 fps | 96.1% |
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% | 42,467 psi | 68% | 1932 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 27,775 psi | 45% | 1762 fps | 97.7% |
| Accurate 2200 | <<locked>> | 88% | 47,659 psi | 76% | 2090 fps | 95.1% |
| Accurate 2230 | 62 gr | 88% | 47,181 psi | 76% | 2096 fps | 95.5% |
| Accurate 2460 | <<locked>> | 80% | 29,443 psi | 47% | 1814 fps | 95% |
| Accurate 2495 | <<locked>> | 82% | 21,741 psi | 35% | 1699 fps | 95.7% |
| Accurate 2520 | <<locked>> | 86% | 30,893 psi | 50% | 1880 fps | 95.2% |
| Accurate 4064 | <<locked>> | 90% | 26,629 psi | 43% | 1821 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 36,463 psi | 58% | 1841 fps | 98.5% |
| Accurate LT-32 | <<locked>> | 80% | 36,854 psi | 59% | 1844 fps | 96.8% |
| ADI AR 2206H | <<locked>> | 98% | 44,512 psi | 71% | 2077 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 38,421 psi | 62% | 1913 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 33,721 psi | 54% | 1900 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 92% | 39,595 psi | 63% | 1982 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 25,585 psi | 41% | 1775 fps | 99.1% |
| Alliant Power Pro 1200-R | 57.3 gr | 88% | 39,305 psi | 63% | 2041 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,111 psi | 51% | 1850 fps | 99.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,798 psi | 64% | 1919 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,461 psi | 55% | 1837 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 35,694 psi | 57% | 1877 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 92% | 36,361 psi | 58% | 1985 fps | 95.5% |
| Hodgdon CFE223 | <<locked>> | 96% | 46,963 psi | 75% | 2162 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 30,908 psi | 50% | 1844 fps | 96.9% |
| Hodgdon H335 | <<locked>> | 80% | 30,922 psi | 50% | 1854 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 80% | 40,205 psi | 64% | 1906 fps | 98.7% |
| Hodgdon H4895 | <<locked>> | 96% | 41,974 psi | 67% | 2047 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 40,248 psi | 65% | 2051 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,815 psi | 38% | 1089 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 41,452 psi | 66% | 2014 fps | 95.1% |
| IMR 3031 | <<locked>> | 82% | 26,063 psi | 42% | 1788 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 34,113 psi | 55% | 1841 fps | 99.9% |
| IMR 4227 | <<locked>> | 80% | 45,658 psi | 73% | 1942 fps | 100% |
| IMR 8208 XBR | <<locked>> | 92% | 39,595 psi | 63% | 1982 fps | 95.7% |
| Lovex D073.4 | <<locked>> | 80% | 36,143 psi | 58% | 1932 fps | 96.6% |
| Lovex D073.5 | <<locked>> | 86% | 35,563 psi | 57% | 1926 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 90% | 31,372 psi | 50% | 1900 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 44,889 psi | 72% | 1909 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 44,222 psi | 71% | 1998 fps | 95.2% |
| Lovex S062 | <<locked>> | 98% | 38,174 psi | 61% | 1978 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 36,245 psi | 58% | 1903 fps | 100% |
| Norma 201 | <<locked>> | 94% | 38,319 psi | 61% | 1965 fps | 95.5% |
| Norma 202 | <<locked>> | 86% | 29,762 psi | 48% | 1837 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 96% | 43,352 psi | 70% | 2067 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 94% | 46,688 psi | 75% | 2057 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,830 psi | 38% | 1119 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 45,252 psi | 73% | 1972 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 32,648 psi | 52% | 1864 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 82% | 29,849 psi | 48% | 1798 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 96% | 38,479 psi | 62% | 1962 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 80% | 36,143 psi | 58% | 1932 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 31,372 psi | 50% | 1900 fps | 95.3% |
| Shooters World Precision | <<locked>> | 98% | 38,174 psi | 61% | 1978 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 39,755 psi | 64% | 1949 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,568 psi | 67% | 1752 fps | 100% |
| SNPE Vectan SP 10 | 55.6 gr | 80% | 33,866 psi | 54% | 1900 fps | 96.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,677 psi | 52% | 1850 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 30,676 psi | 49% | 1775 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 28,021 psi | 45% | 1742 fps | 95.7% |
| Somchem S321 | <<locked>> | 88% | 36,811 psi | 59% | 1962 fps | 95.3% |
| Somchem S335 | <<locked>> | 82% | 28,021 psi | 45% | 1745 fps | 95.7% |
| Somchem S341 | <<locked>> | 98% | 44,846 psi | 72% | 2064 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 52,344 psi | 84% | 1916 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 38,595 psi | 62% | 1880 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,922 psi | 50% | 1785 fps | 99.1% |
| Vihtavuori N133 | <<locked>> | 80% | 26,905 psi | 43% | 1716 fps | 97% |
| Vihtavuori N135 | <<locked>> | 80% | 22,278 psi | 36% | 1673 fps | 95.2% |
| Vihtavuori N140 | <<locked>> | 86% | 28,413 psi | 46% | 1788 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 90% | 37,028 psi | 59% | 1936 fps | 95% |
| Vihtavuori N540 | <<locked>> | 90% | 30,589 psi | 49% | 1850 fps | 95.4% |
| Winchester 748 | <<locked>> | 90% | 35,491 psi | 57% | 1959 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 98% | 42,003 psi | 67% | 2054 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 71 powders for .458 Win.Mag. loaded with the .458 | 450gr | Woodleigh HS. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,247 fps; across all powders the maximum-charge window runs from 1,224 fps to 2,247 fps. Accurate 2015 gives the best case fill at 100 %, and 71 of the 71 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 450.0 gr projectile in 0.458" 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, Accurate 2230, SNPE Vectan SP 10 rank at the top here: for .458 Win.Mag. with the .458 | 450gr | Woodleigh HS 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.