Load Specifications
Load data in caliber .458 Lott with .458 | 500gr | Swift A-Frame bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, Alliant Power Pro 1200-R and Alliant Power Pro 2000-MR.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 82% | 54,984 psi | 88% | 2024 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 54,360 psi | 87% | 2083 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 55,651 psi | 89% | 2159 fps | 99% |
| Accurate 2230 | <<locked>> | 86% | 56,347 psi | 90% | 2169 fps | 99.3% |
| Accurate 2460 | <<locked>> | 90% | 53,040 psi | 85% | 2106 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 53,432 psi | 86% | 2126 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 53,679 psi | 86% | 2149 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 49,647 psi | 80% | 2123 fps | 100% |
| Accurate LT-30 | <<locked>> | 88% | 55,985 psi | 90% | 2044 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 56,420 psi | 90% | 2064 fps | 100% |
| ADI AR 2206H | <<locked>> | 96% | 53,258 psi | 85% | 2152 fps | 99.3% |
| ADI AR 2207 | <<locked>> | 84% | 53,664 psi | 86% | 2024 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 50,879 psi | 82% | 2106 fps | 98.4% |
| ADI AR 2219 | <<locked>> | 88% | 55,419 psi | 89% | 2139 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 56,333 psi | 90% | 2156 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 96% | 54,679 psi | 88% | 2139 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 54,186 psi | 87% | 2198 fps | 99.7% |
| Alliant Power Pro 2000-MRᴾ | <<locked>> | 100% | 56,188 psi | 90% | 2274 fps | 99% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 49,226 psi | 79% | 2123 fps | 99.4% |
| Alliant Reloder-10x | <<locked>> | 90% | 54,679 psi | 88% | 2090 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 53,592 psi | 86% | 2175 fps | 99% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 43,656 psi | 70% | 2113 fps | 98.2% |
| Alliant Reloder-7 | <<locked>> | 84% | 54,926 psi | 88% | 2041 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 54,607 psi | 88% | 2051 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 56,275 psi | 90% | 2201 fps | 98.9% |
| Bofors RP3ᴾ | <<locked>> | 100% | 48,834 psi | 78% | 2129 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 94% | 55,724 psi | 89% | 2110 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 96% | 54,302 psi | 87% | 2182 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 92% | 52,692 psi | 84% | 2211 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 90% | 53,824 psi | 86% | 2123 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 54,839 psi | 88% | 2149 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 51,068 psi | 82% | 2136 fps | 97.5% |
| Hodgdon H4198 | <<locked>> | 84% | 54,781 psi | 88% | 2047 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 53,592 psi | 86% | 2159 fps | 99.6% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 54,868 psi | 88% | 2218 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,808 psi | 54% | 1224 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 55,187 psi | 88% | 2162 fps | 99.6% |
| IMR 3031 | <<locked>> | 98% | 55,390 psi | 89% | 2182 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 53,606 psi | 86% | 2129 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 98% | 55,288 psi | 89% | 2113 fps | 95.8% |
| IMR 4198 | <<locked>> | 90% | 55,767 psi | 89% | 2057 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 54,839 psi | 88% | 2201 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 96% | 56,333 psi | 90% | 2156 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 84% | 53,316 psi | 85% | 2113 fps | 100% |
| Lovex D073.5 | <<locked>> | 90% | 52,866 psi | 85% | 2113 fps | 100% |
| Lovex D073.6 | <<locked>> | 98% | 54,795 psi | 88% | 2172 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 54,331 psi | 87% | 2096 fps | 99.3% |
| Lovex S062ᴾ | <<locked>> | 100% | 52,330 psi | 84% | 2129 fps | 99.8% |
| Norma 200 | <<locked>> | 86% | 55,056 psi | 88% | 2073 fps | 100% |
| Norma 201 | <<locked>> | 98% | 55,274 psi | 89% | 2146 fps | 99.9% |
| Norma 202 | <<locked>> | 98% | 55,390 psi | 89% | 2152 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 52,562 psi | 84% | 2165 fps | 99.2% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 53,055 psi | 85% | 2185 fps | 99.1% |
| Ramshot TAC | <<locked>> | 94% | 53,693 psi | 86% | 2129 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 96% | 55,608 psi | 89% | 2185 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 92% | 54,650 psi | 88% | 2126 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,997 psi | 55% | 1257 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 56,391 psi | 90% | 2149 fps | 100% |
| ReloadSwiss RS 50ᴾ | <<locked>> | 100% | 52,214 psi | 84% | 2119 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 52,968 psi | 85% | 2224 fps | 99% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 46,746 psi | 75% | 2169 fps | 100% |
| Rottweil R 901 | <<locked>> | 94% | 53,142 psi | 85% | 2100 fps | 100% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 55,390 psi | 89% | 2139 fps | 99.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 45,498 psi | 73% | 2080 fps | 98.9% |
| Shooters World AR Plus | <<locked>> | 84% | 53,316 psi | 85% | 2113 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 98% | 54,795 psi | 88% | 2172 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 52,330 psi | 84% | 2129 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 53,432 psi | 86% | 2090 fps | 99.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 54,128 psi | 87% | 1824 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 55,782 psi | 89% | 2152 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 47,688 psi | 76% | 2126 fps | 98.5% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 55,883 psi | 90% | 2103 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 96% | 54,636 psi | 88% | 2146 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 54,868 psi | 88% | 2169 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 55,085 psi | 88% | 2073 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 50,488 psi | 81% | 2034 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 53,940 psi | 86% | 2152 fps | 99.9% |
| Somchem S335 | <<locked>> | 96% | 53,403 psi | 86% | 2073 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 54,027 psi | 87% | 2146 fps | 99.2% |
| Somchem S355ᴾ | <<locked>> | 100% | 46,847 psi | 75% | 2087 fps | 98.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 33,533 psi | 54% | 1949 fps | 96.9% |
| Vihtavuori N120 | <<locked>> | 84% | 53,635 psi | 86% | 1985 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 54,897 psi | 88% | 2051 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 54,592 psi | 88% | 2060 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 53,722 psi | 86% | 2116 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 55,854 psi | 90% | 2133 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 45,020 psi | 72% | 2037 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 94% | 53,417 psi | 86% | 2119 fps | 99.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 53,824 psi | 86% | 2136 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 41,394 psi | 66% | 1988 fps | 97.5% |
| Winchester 748 | <<locked>> | 96% | 55,405 psi | 89% | 2195 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 98% | 54,244 psi | 87% | 2175 fps | 99.6% |
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% | 51,706 psi | 83% | 1991 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 35,462 psi | 57% | 1847 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 45,977 psi | 74% | 2037 fps | 97.6% |
| Accurate 2230 | <<locked>> | 80% | 45,672 psi | 73% | 2041 fps | 97.9% |
| Accurate 2460 | <<locked>> | 80% | 38,145 psi | 61% | 1919 fps | 99.4% |
| Accurate 2495 | <<locked>> | 80% | 27,862 psi | 45% | 1775 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 33,417 psi | 54% | 1877 fps | 98.4% |
| Accurate 4064 | <<locked>> | 80% | 26,397 psi | 42% | 1759 fps | 97.5% |
| Accurate LT-30 | <<locked>> | 80% | 44,063 psi | 71% | 1909 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 44,454 psi | 71% | 1923 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 34,708 psi | 56% | 1883 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 47,659 psi | 76% | 1962 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 37,753 psi | 61% | 1919 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 42,540 psi | 68% | 1991 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,505 psi | 55% | 1857 fps | 96.9% |
| Alliant AR-Comp | <<locked>> | 80% | 32,648 psi | 52% | 1867 fps | 100% |
| Alliant Power Pro 1200-R | 60.2 gr | 80% | 39,291 psi | 63% | 1995 fps | 97.8% |
| Alliant Power Pro 2000-MR | 70.5 gr | 88% | 37,956 psi | 61% | 2005 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 29,892 psi | 48% | 1821 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,640 psi | 65% | 1926 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 34,693 psi | 56% | 1906 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 92% | 33,910 psi | 54% | 1942 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 48,689 psi | 78% | 1975 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 42,424 psi | 68% | 1913 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 38,116 psi | 61% | 1959 fps | 95.3% |
| Bofors RP3 | <<locked>> | 86% | 30,879 psi | 50% | 1857 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,695 psi | 59% | 1857 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 80% | 31,836 psi | 51% | 1864 fps | 96.9% |
| Hodgdon CFE223 | 65.6 gr | 80% | 35,302 psi | 57% | 1949 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 39,001 psi | 63% | 1939 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 39,421 psi | 63% | 1955 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 94% | 42,018 psi | 67% | 2018 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 48,530 psi | 78% | 1978 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 32,735 psi | 52% | 1854 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 30,995 psi | 50% | 1857 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,164 psi | 40% | 1093 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 31,763 psi | 51% | 1821 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 31,140 psi | 50% | 1857 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 35,027 psi | 56% | 1870 fps | 95.1% |
| IMR 4166 Enduron | <<locked>> | 96% | 52,054 psi | 83% | 2077 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 41,698 psi | 67% | 1900 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 33,315 psi | 53% | 1890 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 34,505 psi | 55% | 1857 fps | 96.9% |
| Lovex D073.4 | <<locked>> | 80% | 46,456 psi | 74% | 2034 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 37,739 psi | 61% | 1916 fps | 98.6% |
| Lovex D073.6 | <<locked>> | 80% | 30,124 psi | 48% | 1827 fps | 97.5% |
| Lovex S060 | <<locked>> | 80% | 33,895 psi | 54% | 1808 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 28,558 psi | 46% | 1762 fps | 95% |
| Norma 200 | <<locked>> | 80% | 45,658 psi | 73% | 1969 fps | 100% |
| Norma 201 | <<locked>> | 80% | 31,879 psi | 51% | 1814 fps | 96.3% |
| Norma 202 | <<locked>> | 80% | 31,720 psi | 51% | 1827 fps | 98.5% |
| Norma 203B | <<locked>> | 86% | 34,026 psi | 55% | 1896 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 88% | 35,998 psi | 58% | 1942 fps | 95.6% |
| Ramshot TAC | <<locked>> | 88% | 44,251 psi | 71% | 2008 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 35,259 psi | 57% | 1906 fps | 95.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 37,391 psi | 60% | 1890 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,280 psi | 41% | 1122 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,624 psi | 62% | 1923 fps | 99.1% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 48,936 psi | 78% | 2080 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 35,766 psi | 57% | 1972 fps | 95.3% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 28,123 psi | 45% | 1824 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 35,360 psi | 57% | 1857 fps | 99% |
| Rottweil R 902 | <<locked>> | 80% | 30,414 psi | 49% | 1778 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 88% | 30,821 psi | 49% | 1847 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 80% | 46,456 psi | 74% | 2034 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,124 psi | 48% | 1827 fps | 97.5% |
| Shooters World Precision | <<locked>> | 80% | 28,558 psi | 46% | 1762 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 40,930 psi | 66% | 1932 fps | 98.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 48,950 psi | 78% | 1775 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 43,047 psi | 69% | 1998 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 35,041 psi | 56% | 1932 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 41,220 psi | 66% | 1932 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 41,785 psi | 67% | 1985 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 33,228 psi | 53% | 1857 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,895 psi | 54% | 1795 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,456 psi | 44% | 1699 fps | 98.1% |
| Somchem S321 | <<locked>> | 80% | 36,318 psi | 58% | 1913 fps | 97.8% |
| Somchem S335 | <<locked>> | 80% | 33,127 psi | 53% | 1801 fps | 99.3% |
| Somchem S341 | <<locked>> | 82% | 33,866 psi | 54% | 1864 fps | 95.1% |
| Somchem S355 | <<locked>> | 88% | 32,329 psi | 52% | 1860 fps | 95.5% |
| Somchem S365 | <<locked>> | 96% | 29,718 psi | 48% | 1870 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 47,659 psi | 76% | 1923 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 38,537 psi | 62% | 1857 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,779 psi | 54% | 1801 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 28,805 psi | 46% | 1781 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 29,921 psi | 48% | 1781 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 86% | 28,993 psi | 46% | 1778 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 34,113 psi | 55% | 1850 fps | 97% |
| Vihtavuori N540 | <<locked>> | 80% | 28,703 psi | 46% | 1772 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 34,272 psi | 55% | 1870 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 32,808 psi | 53% | 1880 fps | 97.4% |
| Winchester StaBALL Match | <<locked>> | 82% | 32,126 psi | 52% | 1857 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 92 powders for .458 Lott loaded with the .458 | 500gr | Swift A-Frame. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,274 fps; across all powders the maximum-charge window runs from 1,224 fps to 2,274 fps. Accurate 2495 gives the best case fill at 100 %, and 92 of the 92 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 54–90 %, 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 2495, Accurate 4064, ADI AR 2208 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. Hodgdon CFE223, Alliant Power Pro 1200-R, Alliant Power Pro 2000-MR rank at the top here: for .458 Lott 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.