Load Specifications
Load data in caliber .458 Win.Mag. with .458 | 450gr | NorthFork Bonded Core bullet and 64 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, ADI AR 2219 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>> | 90% | 56,188 psi | 90% | 2064 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 48,559 psi | 78% | 2057 fps | 100% |
| Accurate 2200 | <<locked>> | 94% | 55,347 psi | 89% | 2156 fps | 96.2% |
| Accurate 2230 | <<locked>> | 94% | 55,245 psi | 89% | 2162 fps | 96.5% |
| Accurate 2460ᴾ | <<locked>> | 100% | 54,027 psi | 87% | 2142 fps | 99.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 36,405 psi | 58% | 1972 fps | 99.6% |
| Accurate 2520ᴾ | <<locked>> | 100% | 46,992 psi | 75% | 2100 fps | 98.6% |
| Accurate 4064ᴾ | <<locked>> | 100% | 33,997 psi | 55% | 1946 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 96% | 56,391 psi | 90% | 2067 fps | 100% |
| Accurate LT-32 | <<locked>> | 94% | 53,679 psi | 86% | 2044 fps | 99.2% |
| ADI AR 2205 | <<locked>> | 82% | 55,056 psi | 88% | 1939 fps | 100% |
| ADI AR 2207 | <<locked>> | 94% | 55,782 psi | 89% | 2090 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 54,143 psi | 87% | 2156 fps | 100% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 48,022 psi | 77% | 2073 fps | 97.1% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 44,875 psi | 72% | 2080 fps | 100% |
| Alliant Power Pro 1200-Rᴾ | <<locked>> | 100% | 54,636 psi | 88% | 2224 fps | 97.9% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 55,811 psi | 89% | 2139 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 92% | 54,505 psi | 87% | 2073 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 54,404 psi | 87% | 2070 fps | 100% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 51,692 psi | 83% | 2073 fps | 98.2% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 44,599 psi | 72% | 2087 fps | 97.2% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 55,303 psi | 89% | 2169 fps | 100% |
| Hodgdon H335 | <<locked>> | 98% | 53,040 psi | 85% | 2156 fps | 99.6% |
| Hodgdon H4198 | <<locked>> | 92% | 55,376 psi | 89% | 2070 fps | 99.9% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 44,962 psi | 72% | 2064 fps | 95.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,140 psi | 52% | 1204 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 42,554 psi | 68% | 2070 fps | 99.7% |
| IMR 4198 | <<locked>> | 98% | 54,491 psi | 87% | 2080 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 55,579 psi | 89% | 2028 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 48,022 psi | 77% | 2073 fps | 97.1% |
| Lovex D060 | <<locked>> | 82% | 55,230 psi | 89% | 2057 fps | 100% |
| Lovex D073.4 | <<locked>> | 94% | 55,767 psi | 89% | 2162 fps | 99.4% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 54,201 psi | 87% | 2146 fps | 98.8% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 41,278 psi | 66% | 2037 fps | 97.7% |
| Lovex S053 | <<locked>> | 88% | 53,940 psi | 86% | 1985 fps | 100% |
| Norma 200 | <<locked>> | 96% | 56,231 psi | 90% | 2126 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 43,584 psi | 70% | 2018 fps | 96.3% |
| Norma 202ᴾ | <<locked>> | 100% | 43,366 psi | 70% | 2037 fps | 98.6% |
| Ramshot X-Terminatorᴾ | <<locked>> | 100% | 53,940 psi | 86% | 2116 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,981 psi | 51% | 1234 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 55,390 psi | 89% | 2060 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 55,013 psi | 88% | 2152 fps | 99.2% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 47,761 psi | 77% | 2060 fps | 99% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 41,234 psi | 66% | 1978 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 94% | 55,767 psi | 89% | 2162 fps | 99.4% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 55,230 psi | 89% | 2057 fps | 100% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 41,278 psi | 66% | 2037 fps | 97.7% |
| Shooters World Tactical Rifle | <<locked>> | 96% | 53,011 psi | 85% | 2090 fps | 97.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 54,636 psi | 88% | 1867 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 54,375 psi | 87% | 2162 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 53,969 psi | 87% | 2116 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 47,413 psi | 76% | 2005 fps | 98.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 37,855 psi | 61% | 1893 fps | 98.2% |
| Somchem S321ᴾ | <<locked>> | 100% | 52,098 psi | 84% | 2146 fps | 98.1% |
| Somchem S335ᴾ | <<locked>> | 100% | 45,455 psi | 73% | 2005 fps | 99.3% |
| Vihtavuori N110 | <<locked>> | 84% | 56,391 psi | 90% | 1932 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 55,854 psi | 90% | 2051 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 53,374 psi | 86% | 2067 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 46,398 psi | 74% | 2005 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 38,392 psi | 62% | 1978 fps | 99.7% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 41,118 psi | 66% | 1985 fps | 98.4% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 48,602 psi | 78% | 2073 fps | 97.2% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 39,479 psi | 63% | 1978 fps | 97.6% |
| Winchester 748ᴾ | <<locked>> | 100% | 46,340 psi | 74% | 2100 fps | 97.7% |
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% | 40,843 psi | 65% | 1890 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 26,324 psi | 42% | 1716 fps | 96.8% |
| Accurate 2200 | <<locked>> | 92% | 51,750 psi | 83% | 2113 fps | 95.5% |
| Accurate 2230 | <<locked>> | 90% | 47,906 psi | 77% | 2077 fps | 95.1% |
| Accurate 2460 | <<locked>> | 84% | 31,662 psi | 51% | 1837 fps | 95.4% |
| Accurate 2495 | <<locked>> | 84% | 21,683 psi | 35% | 1683 fps | 95.3% |
| Accurate 2520 | <<locked>> | 90% | 33,214 psi | 53% | 1903 fps | 95.5% |
| Accurate 4064 | <<locked>> | 94% | 28,181 psi | 45% | 1837 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 35,114 psi | 56% | 1795 fps | 97.8% |
| Accurate LT-32 | <<locked>> | 80% | 35,520 psi | 57% | 1798 fps | 95.9% |
| ADI AR 2205 | <<locked>> | 80% | 51,779 psi | 83% | 1906 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 36,593 psi | 59% | 1867 fps | 100% |
| ADI AR 2219 | 51.1 gr | 80% | 32,024 psi | 51% | 1844 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 94% | 39,972 psi | 64% | 1962 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 24,323 psi | 39% | 1722 fps | 98.3% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 42,119 psi | 68% | 2060 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 30,516 psi | 49% | 1801 fps | 99% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,985 psi | 61% | 1873 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 33,025 psi | 53% | 1791 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 90% | 38,508 psi | 62% | 1896 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 94% | 36,724 psi | 59% | 1969 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 29,573 psi | 47% | 1795 fps | 95.9% |
| Hodgdon H335 | <<locked>> | 82% | 31,415 psi | 50% | 1841 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 38,769 psi | 62% | 1860 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 98% | 42,351 psi | 68% | 2028 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,641 psi | 38% | 1073 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 26,223 psi | 42% | 1768 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 32,677 psi | 52% | 1795 fps | 99.7% |
| IMR 4227 | <<locked>> | 80% | 43,976 psi | 71% | 1903 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 39,972 psi | 64% | 1962 fps | 95.2% |
| Lovex D060 | <<locked>> | 80% | 52,228 psi | 84% | 2024 fps | 100% |
| Lovex D073.4 | <<locked>> | 80% | 34,229 psi | 55% | 1877 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 88% | 35,926 psi | 58% | 1909 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 94% | 33,837 psi | 54% | 1923 fps | 95.7% |
| Lovex S053 | <<locked>> | 80% | 43,178 psi | 69% | 1870 fps | 100% |
| Norma 200 | <<locked>> | 80% | 34,403 psi | 55% | 1857 fps | 99.8% |
| Norma 201 | <<locked>> | 96% | 38,609 psi | 62% | 1946 fps | 95% |
| Norma 202 | <<locked>> | 88% | 29,965 psi | 48% | 1821 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 96% | 47,340 psi | 76% | 2041 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,482 psi | 38% | 1096 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 43,540 psi | 70% | 1929 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 35,331 psi | 57% | 1890 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 86% | 31,908 psi | 51% | 1818 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 98% | 38,841 psi | 62% | 1942 fps | 95% |
| Shooters World AR Plus | 53.1 gr | 80% | 34,229 psi | 55% | 1877 fps | 95.5% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 52,228 psi | 84% | 2024 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 94% | 33,837 psi | 54% | 1923 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 43,178 psi | 69% | 1972 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 40,103 psi | 64% | 1719 fps | 100% |
| SNPE Vectan SP 10 | 52.9 gr | 80% | 32,227 psi | 52% | 1850 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 31,183 psi | 50% | 1801 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 31,024 psi | 50% | 1762 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 28,355 psi | 45% | 1726 fps | 95.3% |
| Somchem S321 | <<locked>> | 92% | 39,885 psi | 64% | 1988 fps | 95.7% |
| Somchem S335 | <<locked>> | 84% | 28,355 psi | 45% | 1732 fps | 95.3% |
| Vihtavuori N110 | <<locked>> | 80% | 50,415 psi | 81% | 1877 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 36,796 psi | 59% | 1837 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 29,501 psi | 47% | 1739 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 80% | 25,715 psi | 41% | 1670 fps | 96.1% |
| Vihtavuori N135 | <<locked>> | 84% | 23,902 psi | 38% | 1699 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 90% | 30,472 psi | 49% | 1808 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 94% | 39,929 psi | 64% | 1959 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 92% | 30,995 psi | 50% | 1834 fps | 95% |
| Winchester 748 | <<locked>> | 94% | 38,232 psi | 61% | 1982 fps | 95.7% |
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 64 powders for .458 Win.Mag. loaded with the .458 | 450gr | NorthFork Bonded Core. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,224 fps; across all powders the maximum-charge window runs from 1,204 fps to 2,224 fps. Accurate 2015 gives the best case fill at 100 %, and 64 of the 64 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. 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 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, ADI AR 2219, Shooters World AR Plus rank at the top here: for .458 Win.Mag. with the .458 | 450gr | NorthFork Bonded Core 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.