Load Specifications
Load data in caliber .458 Win.Mag. with .458 | 400gr | Woodleigh HS bullet and 61 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, Lovex D073.4 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% | 53,577 psi | 86% | 2231 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 49,559 psi | 79% | 2260 fps | 100% |
| Accurate 2200 | <<locked>> | 94% | 56,159 psi | 90% | 2365 fps | 95.9% |
| Accurate 2460ᴾ | <<locked>> | 100% | 55,172 psi | 88% | 2352 fps | 99.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 37,507 psi | 60% | 2165 fps | 99.5% |
| Accurate 2520ᴾ | <<locked>> | 100% | 47,964 psi | 77% | 2303 fps | 98.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 34,983 psi | 56% | 2136 fps | 97.1% |
| Accurate LT-30 | <<locked>> | 94% | 54,085 psi | 87% | 2238 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 94% | 54,621 psi | 88% | 2247 fps | 99.1% |
| ADI AR 2205 | <<locked>> | 82% | 55,535 psi | 89% | 2133 fps | 100% |
| ADI AR 2207 | <<locked>> | 92% | 53,345 psi | 86% | 2267 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 55,100 psi | 88% | 2369 fps | 99.9% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 48,921 psi | 78% | 2274 fps | 96.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 45,643 psi | 73% | 2283 fps | 100% |
| Alliant Power Pro 1200-Rᴾ | <<locked>> | 100% | 55,709 psi | 89% | 2441 fps | 97.7% |
| Alliant Reloder-10x | <<locked>> | 98% | 53,476 psi | 86% | 2316 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 92% | 55,303 psi | 89% | 2277 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 55,419 psi | 89% | 2274 fps | 100% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 52,562 psi | 84% | 2277 fps | 98% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 45,774 psi | 73% | 2290 fps | 97% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 56,347 psi | 90% | 2382 fps | 100% |
| Hodgdon H335 | <<locked>> | 98% | 54,143 psi | 87% | 2365 fps | 99.5% |
| Hodgdon H4198 | <<locked>> | 92% | 56,144 psi | 90% | 2274 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,126 psi | 52% | 1329 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 43,540 psi | 70% | 2274 fps | 99.6% |
| IMR 4198 | <<locked>> | 98% | 55,201 psi | 89% | 2290 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 53,229 psi | 85% | 2198 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 48,921 psi | 78% | 2274 fps | 96.9% |
| Lovex D060 | <<locked>> | 82% | 56,014 psi | 90% | 2267 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 52,881 psi | 85% | 2329 fps | 98.9% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 55,521 psi | 89% | 2356 fps | 98.7% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 42,395 psi | 68% | 2238 fps | 97.5% |
| Lovex S053 | <<locked>> | 88% | 54,839 psi | 88% | 2188 fps | 100% |
| Norma 200 | <<locked>> | 94% | 54,027 psi | 87% | 2303 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 44,585 psi | 71% | 2218 fps | 96.1% |
| Norma 202ᴾ | <<locked>> | 100% | 44,309 psi | 71% | 2238 fps | 98.5% |
| Ramshot X-Terminatorᴾ | <<locked>> | 100% | 54,839 psi | 88% | 2323 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,068 psi | 51% | 1362 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 56,101 psi | 90% | 2267 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 56,057 psi | 90% | 2365 fps | 99.1% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 48,617 psi | 78% | 2264 fps | 98.8% |
| Shooters World AR Plus | <<locked>> | 92% | 52,881 psi | 85% | 2329 fps | 98.9% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 56,014 psi | 90% | 2267 fps | 100% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 42,395 psi | 68% | 2238 fps | 97.5% |
| Shooters World Tactical Rifle | <<locked>> | 96% | 54,012 psi | 87% | 2297 fps | 97.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 55,434 psi | 89% | 2060 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 55,463 psi | 89% | 2372 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 54,926 psi | 88% | 2326 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 48,327 psi | 77% | 2201 fps | 98.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 38,595 psi | 62% | 2080 fps | 98% |
| Somchem S321ᴾ | <<locked>> | 100% | 53,359 psi | 86% | 2356 fps | 98% |
| Somchem S335ᴾ | <<locked>> | 100% | 46,427 psi | 74% | 2201 fps | 99.2% |
| Vihtavuori N110 | <<locked>> | 82% | 54,041 psi | 87% | 2100 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 53,447 psi | 86% | 2224 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 54,346 psi | 87% | 2274 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 47,340 psi | 76% | 2205 fps | 99.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 39,262 psi | 63% | 2172 fps | 99.6% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 42,061 psi | 67% | 2182 fps | 98.3% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 49,545 psi | 79% | 2277 fps | 97% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 40,321 psi | 65% | 2172 fps | 97.4% |
| Winchester 748ᴾ | <<locked>> | 100% | 47,282 psi | 76% | 2306 fps | 97.5% |
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% | 41,408 psi | 66% | 2077 fps | 99.9% |
| Accurate 2015 | <<locked>> | 80% | 26,760 psi | 43% | 1880 fps | 96.4% |
| Accurate 2200 | <<locked>> | 92% | 52,692 psi | 84% | 2323 fps | 95.2% |
| Accurate 2460 | <<locked>> | 84% | 32,387 psi | 52% | 2014 fps | 95.1% |
| Accurate 2495 | <<locked>> | 86% | 23,656 psi | 38% | 1883 fps | 95.6% |
| Accurate 2520 | <<locked>> | 90% | 33,982 psi | 54% | 2087 fps | 95.2% |
| Accurate 4064 | <<locked>> | 96% | 30,864 psi | 49% | 2057 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 35,462 psi | 57% | 1972 fps | 97.5% |
| Accurate LT-32 | <<locked>> | 80% | 35,868 psi | 58% | 1972 fps | 95.5% |
| ADI AR 2205 | <<locked>> | 80% | 52,402 psi | 84% | 2100 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 37,217 psi | 60% | 2054 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 32,561 psi | 52% | 2024 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 96% | 43,221 psi | 69% | 2192 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 24,729 psi | 40% | 1886 fps | 97.9% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 43,062 psi | 69% | 2264 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,096 psi | 50% | 1978 fps | 98.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 38,566 psi | 62% | 2057 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 33,562 psi | 54% | 1965 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 90% | 39,102 psi | 63% | 2083 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 96% | 39,987 psi | 64% | 2201 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 30,037 psi | 48% | 1969 fps | 95.5% |
| Hodgdon H335 | <<locked>> | 82% | 32,068 psi | 51% | 2021 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 80% | 39,146 psi | 63% | 2041 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,714 psi | 38% | 1184 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 28,384 psi | 46% | 1985 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 33,083 psi | 53% | 1972 fps | 99.6% |
| IMR 4227 | <<locked>> | 80% | 44,614 psi | 72% | 2093 fps | 100% |
| IMR 8208 XBR | <<locked>> | 96% | 43,221 psi | 69% | 2192 fps | 95.6% |
| Lovex D060 | <<locked>> | 80% | 52,866 psi | 85% | 2228 fps | 100% |
| Lovex D073.4 | 60 gr | 80% | 34,795 psi | 56% | 2057 fps | 95.1% |
| Lovex D073.5 | <<locked>> | 88% | 36,753 psi | 59% | 2096 fps | 95% |
| Lovex D073.6 | <<locked>> | 94% | 34,519 psi | 55% | 2106 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 43,613 psi | 70% | 2057 fps | 100% |
| Norma 200 | <<locked>> | 80% | 35,085 psi | 56% | 2041 fps | 99.8% |
| Norma 201 | <<locked>> | 98% | 41,901 psi | 67% | 2175 fps | 95.4% |
| Norma 202 | <<locked>> | 90% | 32,460 psi | 52% | 2037 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 96% | 48,385 psi | 78% | 2241 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,496 psi | 38% | 1214 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 44,063 psi | 71% | 2123 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 35,897 psi | 58% | 2070 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 86% | 32,401 psi | 52% | 1995 fps | 95.1% |
| Shooters World AR Plus | 60 gr | 80% | 34,795 psi | 56% | 2057 fps | 95.1% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 52,866 psi | 85% | 2228 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 94% | 34,519 psi | 55% | 2106 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 44,034 psi | 71% | 2165 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 40,640 psi | 65% | 1893 fps | 100% |
| SNPE Vectan SP 10 | 59.9 gr | 80% | 32,866 psi | 53% | 2031 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 31,691 psi | 51% | 1978 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 33,620 psi | 54% | 1975 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 30,472 psi | 49% | 1929 fps | 95.6% |
| Somchem S321 | <<locked>> | 92% | 40,683 psi | 65% | 2178 fps | 95.4% |
| Somchem S335 | <<locked>> | 86% | 30,530 psi | 49% | 1939 fps | 95.6% |
| Vihtavuori N110 | <<locked>> | 80% | 51,068 psi | 82% | 2070 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 37,376 psi | 60% | 2021 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,023 psi | 48% | 1913 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 80% | 26,150 psi | 42% | 1834 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 84% | 24,265 psi | 39% | 1860 fps | 95.2% |
| Vihtavuori N140 | <<locked>> | 90% | 30,937 psi | 50% | 1982 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 94% | 40,654 psi | 65% | 2149 fps | 95% |
| Vihtavuori N540 | <<locked>> | 94% | 33,634 psi | 54% | 2051 fps | 95.5% |
| Winchester 748 | <<locked>> | 94% | 38,986 psi | 63% | 2175 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 61 powders for .458 Win.Mag. loaded with the .458 | 400gr | Woodleigh HS. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,441 fps; across all powders the maximum-charge window runs from 1,329 fps to 2,441 fps. Accurate 2015 gives the best case fill at 100 %, and 61 of the 61 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. 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. Shooters World AR Plus, Lovex D073.4, SNPE Vectan SP 10 rank at the top here: for .458 Win.Mag. with the .458 | 400gr | Woodleigh HS 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.