Load Specifications
Load data in caliber .458 Win.Mag. with .458 | 500gr | Swift A-Frame bullet and 85 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, Hodgdon CFE223 and Accurate 2230.
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>> | 86% | 54,462 psi | 87% | 1942 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 54,737 psi | 88% | 2011 fps | 100% |
| Accurate 2200 | <<locked>> | 90% | 54,041 psi | 87% | 2044 fps | 97.5% |
| Accurate 2230 | <<locked>> | 90% | 54,041 psi | 87% | 2051 fps | 97.9% |
| Accurate 2460 | <<locked>> | 96% | 53,432 psi | 86% | 2031 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 42,728 psi | 69% | 1946 fps | 100% |
| Accurate 2520ᴾ | <<locked>> | 100% | 53,882 psi | 86% | 2070 fps | 99.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 39,740 psi | 64% | 1929 fps | 99.4% |
| Accurate LT-30 | <<locked>> | 92% | 55,143 psi | 88% | 1952 fps | 100% |
| Accurate LT-32 | <<locked>> | 92% | 55,593 psi | 89% | 1965 fps | 99.9% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 50,386 psi | 81% | 2028 fps | 97.8% |
| ADI AR 2207 | <<locked>> | 90% | 54,940 psi | 88% | 1969 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 53,156 psi | 85% | 2037 fps | 100% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 53,606 psi | 86% | 2037 fps | 99.1% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 50,894 psi | 82% | 2034 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 54,360 psi | 87% | 2113 fps | 99% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 40,350 psi | 65% | 1926 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 96% | 55,477 psi | 89% | 2024 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 44,193 psi | 71% | 1972 fps | 96% |
| Alliant Reloder-7 | <<locked>> | 88% | 53,519 psi | 86% | 1952 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 53,156 psi | 85% | 1955 fps | 100% |
| Baschieri & Pellagri 107ᴾ | <<locked>> | 100% | 50,082 psi | 80% | 2034 fps | 96.4% |
| Bofors RP3ᴾ | <<locked>> | 100% | 39,291 psi | 63% | 1926 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 98% | 53,708 psi | 86% | 2001 fps | 99.4% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 50,981 psi | 82% | 2064 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 98% | 53,679 psi | 86% | 2126 fps | 97.8% |
| Hodgdon H322 | <<locked>> | 96% | 54,795 psi | 88% | 2054 fps | 100% |
| Hodgdon H335 | <<locked>> | 96% | 55,985 psi | 90% | 2077 fps | 100% |
| Hodgdon H4198 | <<locked>> | 88% | 53,824 psi | 86% | 1952 fps | 100% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 50,589 psi | 81% | 2037 fps | 98.4% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 45,774 psi | 73% | 2018 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,750 psi | 53% | 1148 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 49,516 psi | 79% | 2005 fps | 98% |
| IMR 3031ᴾ | <<locked>> | 100% | 48,182 psi | 77% | 2034 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 44,991 psi | 72% | 1936 fps | 96.1% |
| IMR 4198 | <<locked>> | 94% | 53,693 psi | 86% | 1962 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 54,215 psi | 87% | 1906 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 45,165 psi | 72% | 1998 fps | 97% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 53,606 psi | 86% | 2037 fps | 99.1% |
| Lovex D073.4 | <<locked>> | 90% | 54,621 psi | 88% | 2044 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 96% | 53,577 psi | 86% | 2037 fps | 99.6% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 47,659 psi | 76% | 2014 fps | 99.6% |
| Lovex S053 | <<locked>> | 86% | 55,767 psi | 89% | 1893 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 52,388 psi | 84% | 1982 fps | 97.9% |
| Lovex S062ᴾ | <<locked>> | 100% | 43,482 psi | 70% | 1939 fps | 97.9% |
| Norma 200 | <<locked>> | 92% | 55,767 psi | 89% | 2008 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 49,255 psi | 79% | 1991 fps | 98.7% |
| Norma 202ᴾ | <<locked>> | 100% | 48,979 psi | 79% | 2005 fps | 99.9% |
| Norma 203Bᴾ | <<locked>> | 100% | 43,207 psi | 69% | 1965 fps | 96.5% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 44,251 psi | 71% | 1978 fps | 96% |
| Ramshot TACᴾ | <<locked>> | 100% | 55,245 psi | 89% | 2047 fps | 95.8% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 52,895 psi | 85% | 2064 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 98% | 56,144 psi | 90% | 2047 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,909 psi | 53% | 1181 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 53,983 psi | 87% | 1936 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 54,186 psi | 87% | 2041 fps | 99.8% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 46,485 psi | 75% | 2047 fps | 96.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 39,030 psi | 63% | 1949 fps | 97.6% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 53,534 psi | 86% | 2021 fps | 100% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 46,427 psi | 74% | 1952 fps | 98.3% |
| Shooters World AR Plus | <<locked>> | 90% | 54,621 psi | 88% | 2044 fps | 99.9% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 47,659 psi | 76% | 2014 fps | 99.6% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 43,482 psi | 70% | 1939 fps | 97.9% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 55,303 psi | 89% | 2018 fps | 99% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 53,490 psi | 86% | 1752 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 53,621 psi | 86% | 2047 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 53,301 psi | 85% | 2001 fps | 100% |
| SNPE Vectan SP 7ᴾ | <<locked>> | 100% | 51,938 psi | 83% | 2021 fps | 95.8% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 48,791 psi | 78% | 2008 fps | 97.4% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 52,852 psi | 85% | 1965 fps | 99.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 42,293 psi | 68% | 1864 fps | 99.7% |
| Somchem S321 | <<locked>> | 98% | 55,027 psi | 88% | 2077 fps | 99.4% |
| Somchem S335ᴾ | <<locked>> | 100% | 50,995 psi | 82% | 1969 fps | 100% |
| Somchem S341ᴾ | <<locked>> | 100% | 51,111 psi | 82% | 2021 fps | 97.6% |
| Somchem S355ᴾ | <<locked>> | 100% | 38,435 psi | 62% | 1890 fps | 95.8% |
| Vihtavuori N120 | <<locked>> | 90% | 54,998 psi | 88% | 1929 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 55,956 psi | 90% | 1985 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 51,967 psi | 83% | 1959 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 43,888 psi | 70% | 1942 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 46,485 psi | 75% | 1955 fps | 99.8% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 37,130 psi | 60% | 1847 fps | 96.8% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 54,505 psi | 87% | 2041 fps | 99.2% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 44,643 psi | 72% | 1955 fps | 99.5% |
| Winchester 748ᴾ | <<locked>> | 100% | 52,170 psi | 84% | 2073 fps | 99.5% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 47,979 psi | 77% | 2014 fps | 97.9% |
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% | 44,773 psi | 72% | 1841 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 29,646 psi | 48% | 1690 fps | 99% |
| Accurate 2200 | <<locked>> | 84% | 44,643 psi | 72% | 1929 fps | 95.7% |
| Accurate 2230 | 56 gr | 82% | 40,959 psi | 66% | 1890 fps | 95.2% |
| Accurate 2460 | <<locked>> | 80% | 31,604 psi | 51% | 1745 fps | 97% |
| Accurate 2495 | <<locked>> | 80% | 22,220 psi | 36% | 1604 fps | 97.1% |
| Accurate 2520 | <<locked>> | 80% | 27,282 psi | 44% | 1699 fps | 95% |
| Accurate 4064 | <<locked>> | 84% | 24,018 psi | 39% | 1654 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 38,551 psi | 62% | 1759 fps | 99.4% |
| Accurate LT-32 | <<locked>> | 80% | 38,943 psi | 62% | 1765 fps | 98.2% |
| ADI AR 2206H | <<locked>> | 92% | 39,552 psi | 63% | 1886 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 40,683 psi | 65% | 1818 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 35,824 psi | 57% | 1821 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 86% | 34,983 psi | 56% | 1791 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 27,253 psi | 44% | 1703 fps | 99.9% |
| Alliant Power Pro 1200-R | 53 gr | 84% | 37,101 psi | 59% | 1886 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 35,665 psi | 57% | 1854 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,330 psi | 55% | 1768 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 41,669 psi | 67% | 1936 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 42,018 psi | 67% | 1827 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,564 psi | 59% | 1759 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 44,063 psi | 71% | 1959 fps | 95% |
| Bofors RP3 | <<locked>> | 96% | 34,505 psi | 55% | 1854 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 31,676 psi | 51% | 1696 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 86% | 32,068 psi | 51% | 1798 fps | 95.4% |
| Hodgdon CFE223 | 61.9 gr | 90% | 41,234 psi | 66% | 1962 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 32,895 psi | 53% | 1772 fps | 98.5% |
| Hodgdon H335 | <<locked>> | 80% | 32,996 psi | 53% | 1781 fps | 97.6% |
| Hodgdon H4198 | <<locked>> | 80% | 42,467 psi | 68% | 1821 fps | 99.6% |
| Hodgdon H4895 | <<locked>> | 90% | 37,217 psi | 60% | 1857 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 35,650 psi | 57% | 1864 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,279 psi | 39% | 1027 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 36,680 psi | 59% | 1827 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 26,063 psi | 42% | 1683 fps | 97.2% |
| IMR 4064 | <<locked>> | 98% | 42,409 psi | 68% | 1903 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 35,984 psi | 58% | 1755 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 48,182 psi | 77% | 1847 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 37,623 psi | 60% | 1890 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 86% | 34,983 psi | 56% | 1791 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 80% | 38,798 psi | 62% | 1854 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 80% | 31,270 psi | 50% | 1739 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 84% | 27,949 psi | 45% | 1722 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 47,108 psi | 76% | 1808 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 39,233 psi | 63% | 1814 fps | 95.2% |
| Lovex S062 | <<locked>> | 92% | 34,171 psi | 55% | 1801 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 38,624 psi | 62% | 1818 fps | 100% |
| Norma 201 | <<locked>> | 88% | 34,229 psi | 55% | 1785 fps | 95.5% |
| Norma 202 | <<locked>> | 80% | 26,382 psi | 42% | 1660 fps | 95.3% |
| Norma 203B | <<locked>> | 96% | 38,276 psi | 61% | 1893 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 98% | 41,437 psi | 66% | 1939 fps | 95.3% |
| Ramshot TAC | <<locked>> | 98% | 51,663 psi | 83% | 2008 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 92% | 40,828 psi | 65% | 1913 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 88% | 40,959 psi | 66% | 1864 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,178 psi | 39% | 1050 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 47,964 psi | 77% | 1877 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 32,663 psi | 52% | 1752 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 43,598 psi | 70% | 2008 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 34,534 psi | 55% | 1867 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 29,950 psi | 48% | 1690 fps | 96.4% |
| Rottweil R 902 | <<locked>> | 90% | 34,403 psi | 55% | 1781 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 80% | 38,798 psi | 62% | 1854 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 27,949 psi | 45% | 1722 fps | 95.3% |
| Shooters World Precision | <<locked>> | 92% | 34,171 psi | 55% | 1801 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 37,057 psi | 59% | 1795 fps | 95.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,627 psi | 70% | 1657 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 36,172 psi | 58% | 1824 fps | 98.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,853 psi | 56% | 1772 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 98% | 48,588 psi | 78% | 1985 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 40,509 psi | 65% | 1900 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 28,892 psi | 46% | 1637 fps | 96.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 24,874 psi | 40% | 1575 fps | 95.6% |
| Somchem S321 | <<locked>> | 82% | 32,329 psi | 52% | 1772 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 28,050 psi | 45% | 1640 fps | 96.9% |
| Somchem S341 | <<locked>> | 92% | 39,363 psi | 63% | 1873 fps | 95% |
| Somchem S355 | <<locked>> | 98% | 36,013 psi | 58% | 1850 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 40,828 psi | 65% | 1785 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,895 psi | 53% | 1709 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 80% | 28,601 psi | 46% | 1647 fps | 98.6% |
| Vihtavuori N135 | <<locked>> | 80% | 23,844 psi | 38% | 1614 fps | 97.4% |
| Vihtavuori N140 | <<locked>> | 80% | 25,222 psi | 40% | 1617 fps | 95% |
| Vihtavuori N150 | <<locked>> | 96% | 32,837 psi | 53% | 1778 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 86% | 34,766 psi | 56% | 1788 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 84% | 27,195 psi | 44% | 1677 fps | 95.3% |
| Winchester 748 | <<locked>> | 84% | 31,241 psi | 50% | 1772 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 92% | 37,159 psi | 60% | 1864 fps | 95.3% |
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 85 powders for .458 Win.Mag. loaded with the .458 | 500gr | Swift A-Frame. Hodgdon CFE223 delivers the highest muzzle velocity at 2,126 fps; across all powders the maximum-charge window runs from 1,148 fps to 2,126 fps. Accurate 2015 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 500.0 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, Hodgdon CFE223, Accurate 2230 rank at the top here: for .458 Win.Mag. with the .458 | 500gr | Swift A-Frame 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.