Load Specifications
Load data in caliber .458 Lott with .458 | 450gr | Swift A-Frame bullet and 90 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 Winchester 748.
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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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% | 53,621 psi | 86% | 2156 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 55,941 psi | 90% | 2247 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 54,128 psi | 87% | 2287 fps | 98.2% |
| Accurate 2230 | <<locked>> | 86% | 54,505 psi | 87% | 2297 fps | 98.5% |
| Accurate 2460 | <<locked>> | 92% | 54,679 psi | 88% | 2274 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 51,372 psi | 82% | 2257 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 55,477 psi | 89% | 2320 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 47,645 psi | 76% | 2244 fps | 100% |
| Accurate LT-30 | <<locked>> | 88% | 54,505 psi | 87% | 2175 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 54,940 psi | 88% | 2192 fps | 100% |
| ADI AR 2206H | <<locked>> | 98% | 54,810 psi | 88% | 2316 fps | 98.9% |
| ADI AR 2207 | <<locked>> | 86% | 55,274 psi | 89% | 2192 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 49,168 psi | 79% | 2224 fps | 97.5% |
| ADI AR 2219 | <<locked>> | 88% | 53,664 psi | 86% | 2274 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 54,520 psi | 87% | 2283 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 98% | 56,086 psi | 90% | 2306 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 55,622 psi | 89% | 2369 fps | 99.5% |
| Alliant Power Pro 2000-MRᴾ | <<locked>> | 100% | 54,375 psi | 87% | 2395 fps | 98.1% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 47,311 psi | 76% | 2241 fps | 98.7% |
| Alliant Reloder-10x | <<locked>> | 92% | 56,420 psi | 90% | 2260 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 51,735 psi | 83% | 2300 fps | 98.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 42,177 psi | 68% | 2224 fps | 96.9% |
| Alliant Reloder-7 | <<locked>> | 84% | 53,287 psi | 85% | 2172 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 53,127 psi | 85% | 2182 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 54,273 psi | 87% | 2326 fps | 98% |
| Bofors RP3ᴾ | <<locked>> | 100% | 47,036 psi | 75% | 2251 fps | 98.7% |
| Hodgdon Benchmark | <<locked>> | 94% | 54,172 psi | 87% | 2238 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 98% | 56,014 psi | 90% | 2352 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 94% | 54,462 psi | 87% | 2382 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 92% | 55,419 psi | 89% | 2293 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 52,953 psi | 85% | 2277 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 49,255 psi | 79% | 2254 fps | 96.4% |
| Hodgdon H4198 | <<locked>> | 84% | 53,272 psi | 85% | 2175 fps | 100% |
| Hodgdon H4895 | <<locked>> | 98% | 55,143 psi | 88% | 2326 fps | 99.3% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 52,968 psi | 85% | 2346 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,678 psi | 54% | 1316 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 53,476 psi | 86% | 2287 fps | 99.1% |
| IMR 3031 | <<locked>> | 98% | 53,330 psi | 86% | 2316 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 51,721 psi | 83% | 2251 fps | 98.1% |
| IMR 4198 | <<locked>> | 90% | 54,128 psi | 87% | 2192 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 52,924 psi | 85% | 2326 fps | 98.8% |
| IMR 8208 XBR | <<locked>> | 96% | 54,520 psi | 87% | 2283 fps | 99.6% |
| Lovex D073.4 | <<locked>> | 86% | 55,027 psi | 88% | 2280 fps | 100% |
| Lovex D073.5 | <<locked>> | 92% | 54,679 psi | 88% | 2280 fps | 99.9% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 56,391 psi | 90% | 2339 fps | 100% |
| Lovex S053 | <<locked>> | 82% | 55,347 psi | 89% | 2106 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 56,086 psi | 90% | 2260 fps | 99% |
| Lovex S062ᴾ | <<locked>> | 100% | 50,633 psi | 81% | 2251 fps | 99.3% |
| Norma 200 | <<locked>> | 86% | 53,113 psi | 85% | 2201 fps | 100% |
| Norma 201 | <<locked>> | 98% | 53,447 psi | 86% | 2274 fps | 99.5% |
| Norma 202 | <<locked>> | 98% | 53,519 psi | 86% | 2283 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 50,720 psi | 81% | 2290 fps | 98.5% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 51,256 psi | 82% | 2310 fps | 98.3% |
| Ramshot TAC | <<locked>> | 96% | 55,579 psi | 89% | 2293 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 96% | 53,708 psi | 86% | 2310 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 92% | 53,171 psi | 85% | 2251 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,750 psi | 54% | 1348 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 54,665 psi | 88% | 2280 fps | 100% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 54,476 psi | 87% | 2392 fps | 98.6% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 45,136 psi | 72% | 2283 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 96% | 54,708 psi | 88% | 2264 fps | 100% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 53,563 psi | 86% | 2267 fps | 99.5% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 43,627 psi | 70% | 2195 fps | 97.9% |
| Shooters World AR Plus | <<locked>> | 86% | 55,027 psi | 88% | 2280 fps | 100% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 56,391 psi | 90% | 2339 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 50,633 psi | 81% | 2251 fps | 99.3% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 55,361 psi | 89% | 2257 fps | 99.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 55,651 psi | 89% | 1978 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 54,012 psi | 87% | 2283 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 46,151 psi | 74% | 2247 fps | 97.5% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 54,099 psi | 87% | 2238 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 96% | 52,939 psi | 85% | 2270 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 52,997 psi | 85% | 2290 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 53,272 psi | 85% | 2198 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 48,950 psi | 78% | 2159 fps | 100% |
| Somchem S321 | <<locked>> | 94% | 55,796 psi | 89% | 2320 fps | 99.8% |
| Somchem S335 | <<locked>> | 98% | 54,984 psi | 88% | 2234 fps | 100% |
| Somchem S341 | <<locked>> | 98% | 55,608 psi | 89% | 2310 fps | 98.9% |
| Somchem S355ᴾ | <<locked>> | 100% | 45,150 psi | 72% | 2201 fps | 98% |
| Vihtavuori N120 | <<locked>> | 86% | 55,259 psi | 89% | 2149 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 53,272 psi | 85% | 2182 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 55,941 psi | 90% | 2224 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 51,822 psi | 83% | 2247 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 53,896 psi | 86% | 2264 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 43,308 psi | 69% | 2152 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 96% | 55,187 psi | 88% | 2283 fps | 99.6% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 52,025 psi | 83% | 2264 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 40,176 psi | 64% | 2096 fps | 96.2% |
| Winchester 748 | <<locked>> | 96% | 53,345 psi | 86% | 2323 fps | 99.9% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 55,883 psi | 90% | 2343 fps | 99.4% |
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% | 50,183 psi | 80% | 2119 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 34,330 psi | 55% | 1959 fps | 99.8% |
| Accurate 2200 | <<locked>> | 80% | 44,440 psi | 71% | 2152 fps | 96.4% |
| Accurate 2230 | <<locked>> | 80% | 44,135 psi | 71% | 2159 fps | 96.8% |
| Accurate 2460 | <<locked>> | 80% | 36,666 psi | 59% | 2028 fps | 98.7% |
| Accurate 2495 | <<locked>> | 80% | 26,629 psi | 43% | 1873 fps | 98.9% |
| Accurate 2520 | <<locked>> | 80% | 32,140 psi | 52% | 1982 fps | 97.3% |
| Accurate 4064 | <<locked>> | 80% | 25,266 psi | 41% | 1850 fps | 96% |
| Accurate LT-30 | <<locked>> | 80% | 42,975 psi | 69% | 2031 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 43,366 psi | 70% | 2041 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 86% | 37,840 psi | 61% | 2067 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 46,311 psi | 74% | 2090 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 38,856 psi | 62% | 2067 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 41,089 psi | 66% | 2110 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 33,243 psi | 53% | 1959 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 31,343 psi | 50% | 1975 fps | 100% |
| Alliant Power Pro 1200-R | 63.8 gr | 80% | 37,681 psi | 60% | 2106 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 41,814 psi | 67% | 2205 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 32,648 psi | 52% | 1998 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 39,189 psi | 63% | 2044 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 37,855 psi | 61% | 2090 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 96% | 37,057 psi | 59% | 2129 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 47,224 psi | 76% | 2100 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 41,278 psi | 66% | 2031 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 41,930 psi | 67% | 2152 fps | 95.4% |
| Bofors RP3 | <<locked>> | 90% | 33,736 psi | 54% | 2037 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 35,737 psi | 57% | 1969 fps | 97% |
| Hodgdon BL-C2 | <<locked>> | 80% | 30,603 psi | 49% | 1965 fps | 95.5% |
| Hodgdon CFE223 | 73.1 gr | 84% | 39,001 psi | 63% | 2149 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 37,710 psi | 60% | 2057 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 80% | 37,985 psi | 61% | 2070 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 96% | 43,323 psi | 69% | 2169 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 47,297 psi | 76% | 2103 fps | 100% |
| Hodgdon H4895 | <<locked>> | 84% | 35,679 psi | 57% | 2037 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 34,011 psi | 55% | 2044 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,903 psi | 40% | 1175 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 34,737 psi | 56% | 2001 fps | 95.2% |
| IMR 3031 | <<locked>> | 80% | 30,066 psi | 48% | 1965 fps | 98.9% |
| IMR 4064 | <<locked>> | 90% | 38,247 psi | 61% | 2051 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 40,437 psi | 65% | 2021 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 36,303 psi | 58% | 2073 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 33,243 psi | 53% | 1959 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 80% | 44,788 psi | 72% | 2152 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 36,419 psi | 58% | 2024 fps | 97.6% |
| Lovex D073.6 | <<locked>> | 80% | 28,906 psi | 46% | 1926 fps | 96.2% |
| Lovex S053 | <<locked>> | 80% | 52,170 psi | 84% | 2073 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 37,072 psi | 59% | 1988 fps | 95.3% |
| Lovex S062 | <<locked>> | 84% | 31,154 psi | 50% | 1939 fps | 95% |
| Norma 200 | <<locked>> | 80% | 44,193 psi | 71% | 2093 fps | 100% |
| Norma 201 | <<locked>> | 82% | 32,793 psi | 53% | 1955 fps | 95.6% |
| Norma 202 | <<locked>> | 80% | 30,589 psi | 49% | 1932 fps | 97.5% |
| Norma 203B | <<locked>> | 90% | 37,057 psi | 59% | 2080 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 92% | 39,566 psi | 63% | 2133 fps | 95.7% |
| Ramshot TAC | <<locked>> | 92% | 48,747 psi | 78% | 2208 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 36,318 psi | 58% | 2051 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 82% | 38,580 psi | 62% | 2037 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,947 psi | 40% | 1201 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 37,420 psi | 60% | 2037 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 39,262 psi | 63% | 2165 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 30,806 psi | 49% | 2005 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 34,214 psi | 55% | 1965 fps | 98.2% |
| Rottweil R 902 | <<locked>> | 84% | 33,098 psi | 53% | 1955 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 92% | 33,678 psi | 54% | 2028 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 44,788 psi | 72% | 2152 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 28,906 psi | 46% | 1926 fps | 96.2% |
| Shooters World Precision | <<locked>> | 84% | 31,154 psi | 50% | 1939 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 39,566 psi | 63% | 2044 fps | 97% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 47,805 psi | 77% | 1896 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 41,597 psi | 67% | 2116 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 38,232 psi | 61% | 2116 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 39,842 psi | 64% | 2051 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 46,180 psi | 74% | 2182 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 36,419 psi | 58% | 2044 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,822 psi | 53% | 1903 fps | 98% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,585 psi | 43% | 1795 fps | 97% |
| Somchem S321 | <<locked>> | 80% | 35,099 psi | 56% | 2021 fps | 96.6% |
| Somchem S335 | <<locked>> | 80% | 32,053 psi | 51% | 1906 fps | 98.5% |
| Somchem S341 | <<locked>> | 86% | 37,304 psi | 60% | 2051 fps | 95.2% |
| Somchem S355 | <<locked>> | 92% | 35,186 psi | 56% | 2041 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 46,325 psi | 74% | 2051 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 37,391 psi | 60% | 1975 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 32,663 psi | 52% | 1909 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 80% | 27,717 psi | 44% | 1880 fps | 99% |
| Vihtavuori N140 | <<locked>> | 80% | 28,848 psi | 46% | 1880 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 88% | 29,747 psi | 48% | 1916 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 32,909 psi | 53% | 1952 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 27,630 psi | 44% | 1867 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 37,608 psi | 60% | 2051 fps | 95.3% |
| Winchester 748 | 66.8 gr | 80% | 31,618 psi | 51% | 1982 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 86% | 35,244 psi | 57% | 2041 fps | 95.5% |
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 106 powders for .458 Lott loaded with the .458 | 450gr | Swift A-Frame. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,395 fps; across all powders the maximum-charge window runs from 1,316 fps to 2,395 fps. Accurate 2495 gives the best case fill at 100 %, and 106 of the 106 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 2495, Accurate 2700, Accurate 4064 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, Winchester 748 rank at the top here: for .458 Lott with the .458 | 450gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 4350, Alliant Reloder-16 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.