Load Specifications
Load data in caliber .458 Win.Mag. with .458 | 410gr | Hornady Sub-X bullet and 65 powders. The key underlying parameters are shown in the table above.
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% | 54,563 psi | 87% | 2211 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 50,734 psi | 81% | 2244 fps | 100% |
| Accurate 2200 | <<locked>> | 92% | 53,809 psi | 86% | 2310 fps | 95.8% |
| Accurate 2230 | <<locked>> | 92% | 53,693 psi | 86% | 2316 fps | 96.2% |
| Accurate 2460 | <<locked>> | 98% | 52,997 psi | 85% | 2300 fps | 99.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 38,667 psi | 62% | 2156 fps | 99.7% |
| Accurate 2520ᴾ | <<locked>> | 100% | 49,269 psi | 79% | 2293 fps | 98.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 36,042 psi | 58% | 2126 fps | 97.6% |
| Accurate LT-30 | <<locked>> | 94% | 55,056 psi | 88% | 2221 fps | 100% |
| Accurate LT-32 | <<locked>> | 94% | 55,593 psi | 89% | 2231 fps | 99.4% |
| ADI AR 2205 | <<locked>> | 82% | 56,362 psi | 90% | 2113 fps | 100% |
| ADI AR 2207 | <<locked>> | 92% | 54,462 psi | 87% | 2244 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 56,362 psi | 90% | 2352 fps | 100% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 49,995 psi | 80% | 2264 fps | 97.4% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 46,760 psi | 75% | 2267 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 53,534 psi | 86% | 2385 fps | 97.7% |
| Alliant Reloder-10x | <<locked>> | 98% | 54,665 psi | 88% | 2300 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 92% | 56,391 psi | 90% | 2260 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 53,040 psi | 85% | 2221 fps | 100% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 53,606 psi | 86% | 2264 fps | 98.4% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 46,934 psi | 75% | 2280 fps | 97.5% |
| Hodgdon CFE223ᴾ | <<locked>> | 100% | 53,156 psi | 85% | 2388 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 98% | 54,027 psi | 87% | 2326 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 98% | 55,419 psi | 89% | 2349 fps | 99.7% |
| Hodgdon H4198 | <<locked>> | 90% | 53,998 psi | 87% | 2221 fps | 99.8% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 46,992 psi | 75% | 2254 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,285 psi | 52% | 1312 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 46,296 psi | 74% | 2221 fps | 95.7% |
| IMR 3031ᴾ | <<locked>> | 100% | 44,585 psi | 71% | 2260 fps | 99.8% |
| IMR 4198 | <<locked>> | 98% | 56,289 psi | 90% | 2270 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 54,157 psi | 87% | 2178 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 49,995 psi | 80% | 2264 fps | 97.4% |
| Lovex D073.4 | <<locked>> | 92% | 54,172 psi | 87% | 2313 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 98% | 52,997 psi | 85% | 2300 fps | 98.6% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 43,598 psi | 70% | 2228 fps | 98% |
| Lovex S053 | <<locked>> | 88% | 55,782 psi | 89% | 2169 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 49,182 psi | 79% | 2201 fps | 95.8% |
| Norma 200 | <<locked>> | 94% | 55,230 psi | 89% | 2283 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 45,629 psi | 73% | 2205 fps | 96.7% |
| Norma 202ᴾ | <<locked>> | 100% | 45,397 psi | 73% | 2224 fps | 98.8% |
| Ramshot X-Terminatorᴾ | <<locked>> | 100% | 55,999 psi | 90% | 2310 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,256 psi | 52% | 1348 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 53,940 psi | 86% | 2215 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 53,838 psi | 86% | 2310 fps | 99.1% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 49,705 psi | 80% | 2251 fps | 99.2% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 43,033 psi | 69% | 2159 fps | 96% |
| Shooters World AR Plus | <<locked>> | 92% | 54,172 psi | 87% | 2313 fps | 99.2% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 43,598 psi | 70% | 2228 fps | 98% |
| Shooters World Tactical Rifle | <<locked>> | 96% | 55,187 psi | 88% | 2283 fps | 97.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 56,304 psi | 90% | 2037 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 53,069 psi | 85% | 2316 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 56,144 psi | 90% | 2310 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 49,342 psi | 79% | 2188 fps | 99.1% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,421 psi | 63% | 2067 fps | 98.5% |
| Somchem S321ᴾ | <<locked>> | 100% | 54,636 psi | 88% | 2346 fps | 98.4% |
| Somchem S335ᴾ | <<locked>> | 100% | 47,456 psi | 76% | 2188 fps | 99.5% |
| Vihtavuori N110 | <<locked>> | 82% | 54,940 psi | 88% | 2080 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 54,549 psi | 87% | 2205 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 55,477 psi | 89% | 2257 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 48,385 psi | 78% | 2188 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,277 psi | 65% | 2159 fps | 99.8% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 43,033 psi | 69% | 2169 fps | 98.7% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 50,691 psi | 81% | 2264 fps | 97.5% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 41,263 psi | 66% | 2162 fps | 97.9% |
| Winchester 748ᴾ | <<locked>> | 100% | 48,370 psi | 78% | 2293 fps | 98% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 42,192 psi | 68% | 2060 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 27,412 psi | 44% | 1870 fps | 96.9% |
| Accurate 2200 | <<locked>> | 90% | 50,517 psi | 81% | 2267 fps | 95.1% |
| Accurate 2230 | <<locked>> | 90% | 50,009 psi | 80% | 2270 fps | 95.5% |
| Accurate 2460 | <<locked>> | 82% | 31,067 psi | 50% | 1965 fps | 95% |
| Accurate 2495 | <<locked>> | 84% | 22,800 psi | 37% | 1837 fps | 95.5% |
| Accurate 2520 | <<locked>> | 88% | 32,706 psi | 52% | 2034 fps | 95.1% |
| Accurate 4064 | <<locked>> | 94% | 29,791 psi | 48% | 2008 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 36,114 psi | 58% | 1959 fps | 98% |
| Accurate LT-32 | <<locked>> | 80% | 36,506 psi | 59% | 1962 fps | 96.1% |
| ADI AR 2205 | <<locked>> | 80% | 53,185 psi | 85% | 2080 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 38,029 psi | 61% | 2037 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 33,257 psi | 53% | 2014 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 94% | 41,597 psi | 67% | 2142 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 25,266 psi | 41% | 1880 fps | 98.4% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 41,365 psi | 66% | 2208 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,821 psi | 51% | 1969 fps | 99.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,349 psi | 63% | 2044 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,229 psi | 55% | 1952 fps | 97.8% |
| Hodgdon Benchmark | <<locked>> | 88% | 37,594 psi | 60% | 2031 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 94% | 38,406 psi | 62% | 2149 fps | 95.5% |
| Hodgdon CFE223 | <<locked>> | 98% | 49,719 psi | 80% | 2339 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 30,676 psi | 49% | 1959 fps | 96.2% |
| Hodgdon H335 | <<locked>> | 82% | 32,779 psi | 53% | 2011 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 80% | 39,856 psi | 64% | 2028 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 98% | 44,121 psi | 71% | 2215 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,844 psi | 38% | 1171 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 43,555 psi | 70% | 2178 fps | 95% |
| IMR 3031 | <<locked>> | 84% | 27,267 psi | 44% | 1932 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 33,721 psi | 54% | 1959 fps | 99.8% |
| IMR 4227 | <<locked>> | 80% | 45,397 psi | 73% | 2077 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 41,597 psi | 67% | 2142 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 80% | 35,650 psi | 57% | 2047 fps | 95.8% |
| Lovex D073.5 | <<locked>> | 88% | 37,681 psi | 60% | 2087 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 92% | 33,257 psi | 53% | 2057 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 44,396 psi | 71% | 2037 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 46,528 psi | 75% | 2162 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 35,897 psi | 58% | 2028 fps | 99.9% |
| Norma 201 | <<locked>> | 96% | 40,480 psi | 65% | 2129 fps | 95.4% |
| Norma 202 | <<locked>> | 88% | 31,212 psi | 50% | 1985 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 96% | 49,414 psi | 79% | 2228 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,641 psi | 38% | 1198 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 44,904 psi | 72% | 2106 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 34,519 psi | 55% | 2021 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 84% | 31,270 psi | 50% | 1946 fps | 95% |
| Rottweil R 902 | <<locked>> | 98% | 40,538 psi | 65% | 2123 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 80% | 35,650 psi | 57% | 2047 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 92% | 33,257 psi | 53% | 2057 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 42,061 psi | 67% | 2110 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,307 psi | 66% | 1873 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 33,620 psi | 54% | 2021 fps | 96% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,372 psi | 52% | 1965 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 32,184 psi | 52% | 1923 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 29,370 psi | 47% | 1883 fps | 95.6% |
| Somchem S321 | <<locked>> | 90% | 38,957 psi | 62% | 2126 fps | 95.3% |
| Somchem S335 | <<locked>> | 84% | 29,385 psi | 47% | 1890 fps | 95.5% |
| Vihtavuori N110 | <<locked>> | 80% | 51,924 psi | 83% | 2047 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 38,174 psi | 61% | 2005 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,676 psi | 49% | 1900 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 80% | 26,701 psi | 43% | 1824 fps | 96.3% |
| Vihtavuori N135 | <<locked>> | 82% | 23,395 psi | 38% | 1814 fps | 95.1% |
| Vihtavuori N140 | <<locked>> | 88% | 29,878 psi | 48% | 1936 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 94% | 41,597 psi | 67% | 2136 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 92% | 32,242 psi | 52% | 2001 fps | 95.3% |
| Winchester 748 | <<locked>> | 92% | 37,376 psi | 60% | 2119 fps | 95.3% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 65 powders for .458 Win.Mag. loaded with the .458 | 410gr | Hornady Sub-X. Hodgdon CFE223 delivers the highest muzzle velocity at 2,388 fps; across all powders the maximum-charge window runs from 1,312 fps to 2,388 fps. Accurate 2015 gives the best case fill at 100 %, and 65 of the 65 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. 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.