Load Specifications
Load data in caliber .458 Lott with .458 | 400gr | Swift A-Frame bullet and 89 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>> | 84% | 56,260 psi | 90% | 2365 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 54,810 psi | 88% | 2418 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 53,069 psi | 85% | 2451 fps | 97.4% |
| Accurate 2230 | <<locked>> | 86% | 53,345 psi | 86% | 2461 fps | 97.8% |
| Accurate 2460 | <<locked>> | 92% | 53,505 psi | 86% | 2441 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 50,067 psi | 80% | 2421 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 54,114 psi | 87% | 2487 fps | 99.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 46,441 psi | 74% | 2405 fps | 99.9% |
| Accurate LT-30 | <<locked>> | 88% | 53,722 psi | 86% | 2346 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 54,186 psi | 87% | 2362 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 98% | 53,838 psi | 86% | 2484 fps | 98.3% |
| ADI AR 2207 | <<locked>> | 86% | 54,404 psi | 87% | 2365 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 48,312 psi | 77% | 2382 fps | 96.5% |
| ADI AR 2219 | <<locked>> | 90% | 56,333 psi | 90% | 2490 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 53,490 psi | 86% | 2451 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 98% | 54,940 psi | 88% | 2484 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 54,650 psi | 88% | 2543 fps | 99% |
| Alliant Power Pro 2000-MRᴾ | <<locked>> | 100% | 53,374 psi | 86% | 2559 fps | 97.1% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 46,354 psi | 74% | 2402 fps | 97.9% |
| Alliant Reloder-10x | <<locked>> | 92% | 55,143 psi | 88% | 2431 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 50,734 psi | 81% | 2461 fps | 97.3% |
| Alliant Reloder-7 | <<locked>> | 86% | 55,651 psi | 89% | 2382 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 55,666 psi | 89% | 2385 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 53,374 psi | 86% | 2490 fps | 97.1% |
| Bofors RP3ᴾ | <<locked>> | 100% | 45,919 psi | 74% | 2405 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 94% | 53,127 psi | 85% | 2402 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 98% | 54,926 psi | 88% | 2520 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 94% | 53,301 psi | 85% | 2549 fps | 97.8% |
| Hodgdon H322 | <<locked>> | 92% | 54,505 psi | 87% | 2467 fps | 100% |
| Hodgdon H335 | <<locked>> | 92% | 55,593 psi | 89% | 2490 fps | 100% |
| Hodgdon H4198 | <<locked>> | 86% | 55,767 psi | 89% | 2385 fps | 100% |
| Hodgdon H4895 | <<locked>> | 98% | 54,143 psi | 87% | 2493 fps | 98.8% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 52,156 psi | 84% | 2513 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,460 psi | 54% | 1430 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 55,941 psi | 90% | 2497 fps | 98.9% |
| IMR 3031ᴾ | <<locked>> | 100% | 55,608 psi | 89% | 2533 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 50,792 psi | 81% | 2411 fps | 97.3% |
| IMR 4198 | <<locked>> | 92% | 56,260 psi | 90% | 2398 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 55,753 psi | 89% | 2326 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 51,895 psi | 83% | 2490 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 96% | 53,490 psi | 86% | 2451 fps | 99.1% |
| Lovex D073.4 | <<locked>> | 86% | 54,027 psi | 87% | 2451 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 92% | 53,679 psi | 86% | 2448 fps | 99.6% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 55,201 psi | 89% | 2510 fps | 99.9% |
| Lovex S053 | <<locked>> | 82% | 54,302 psi | 87% | 2274 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 55,042 psi | 88% | 2425 fps | 98.4% |
| Lovex S062ᴾ | <<locked>> | 100% | 49,632 psi | 80% | 2415 fps | 98.7% |
| Norma 200 | <<locked>> | 88% | 55,448 psi | 89% | 2411 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 55,767 psi | 89% | 2480 fps | 99.4% |
| Norma 202ᴾ | <<locked>> | 100% | 55,941 psi | 90% | 2493 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 49,719 psi | 80% | 2451 fps | 97.7% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 50,198 psi | 80% | 2467 fps | 97.4% |
| Ramshot TAC | <<locked>> | 96% | 54,549 psi | 87% | 2457 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 96% | 52,779 psi | 85% | 2477 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 94% | 55,695 psi | 89% | 2457 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,605 psi | 54% | 1467 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 56,072 psi | 90% | 2362 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 53,693 psi | 86% | 2448 fps | 99.8% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 53,345 psi | 86% | 2559 fps | 97.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 44,280 psi | 71% | 2438 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 96% | 53,722 psi | 86% | 2434 fps | 100% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 52,634 psi | 84% | 2431 fps | 99% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 42,598 psi | 68% | 2346 fps | 96.9% |
| Shooters World AR Plus | <<locked>> | 86% | 54,027 psi | 87% | 2451 fps | 99.8% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 55,201 psi | 89% | 2510 fps | 99.9% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 49,632 psi | 80% | 2415 fps | 98.7% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 54,346 psi | 87% | 2421 fps | 98.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 54,955 psi | 88% | 2142 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 53,069 psi | 85% | 2451 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 45,324 psi | 73% | 2402 fps | 96.5% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 56,333 psi | 90% | 2448 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 98% | 55,506 psi | 89% | 2477 fps | 96.5% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 55,463 psi | 89% | 2500 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 55,593 psi | 89% | 2402 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 48,008 psi | 77% | 2316 fps | 100% |
| Somchem S321 | <<locked>> | 94% | 54,853 psi | 88% | 2490 fps | 99.4% |
| Somchem S335 | <<locked>> | 98% | 53,983 psi | 87% | 2402 fps | 100% |
| Somchem S341 | <<locked>> | 98% | 54,650 psi | 88% | 2477 fps | 98.2% |
| Somchem S355ᴾ | <<locked>> | 100% | 44,092 psi | 71% | 2356 fps | 97% |
| Vihtavuori N120 | <<locked>> | 86% | 54,360 psi | 87% | 2320 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 55,651 psi | 89% | 2388 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 54,940 psi | 88% | 2395 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 50,633 psi | 81% | 2415 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 52,823 psi | 85% | 2431 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 42,366 psi | 68% | 2300 fps | 97.9% |
| Vihtavuori N530 | <<locked>> | 96% | 54,201 psi | 87% | 2451 fps | 99.2% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 51,169 psi | 82% | 2428 fps | 99.9% |
| Winchester 748 | <<locked>> | 98% | 55,811 psi | 89% | 2536 fps | 99.8% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 54,853 psi | 88% | 2510 fps | 98.8% |
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% | 49,487 psi | 79% | 2283 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 33,460 psi | 54% | 2100 fps | 99.5% |
| Accurate 2200 | <<locked>> | 80% | 43,584 psi | 70% | 2306 fps | 95.3% |
| Accurate 2230 | <<locked>> | 80% | 43,250 psi | 69% | 2310 fps | 95.7% |
| Accurate 2460 | <<locked>> | 80% | 35,882 psi | 58% | 2172 fps | 97.9% |
| Accurate 2495 | <<locked>> | 80% | 25,918 psi | 42% | 2001 fps | 98% |
| Accurate 2520 | <<locked>> | 80% | 31,343 psi | 50% | 2116 fps | 96.2% |
| Accurate 4064 | <<locked>> | 82% | 26,208 psi | 42% | 2018 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 42,221 psi | 68% | 2185 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 80% | 42,598 psi | 68% | 2195 fps | 98.8% |
| ADI AR 2206H | <<locked>> | 88% | 39,494 psi | 63% | 2257 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 45,324 psi | 73% | 2251 fps | 100% |
| ADI AR 2208 | <<locked>> | 96% | 42,931 psi | 69% | 2297 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 40,248 psi | 65% | 2264 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 34,751 psi | 56% | 2142 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 30,719 psi | 49% | 2119 fps | 100% |
| Alliant Power Pro 1200-R | 69.3 gr | 80% | 36,854 psi | 59% | 2251 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 46,717 psi | 75% | 2454 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 36,187 psi | 58% | 2224 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 38,377 psi | 62% | 2195 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 42,047 psi | 67% | 2326 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 46,441 psi | 74% | 2264 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 40,495 psi | 65% | 2178 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 46,847 psi | 75% | 2395 fps | 95.7% |
| Bofors RP3 | <<locked>> | 92% | 35,157 psi | 56% | 2221 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 35,041 psi | 56% | 2110 fps | 96% |
| Hodgdon BL-C2 | <<locked>> | 82% | 32,010 psi | 51% | 2146 fps | 95% |
| Hodgdon CFE223 | 83.2 gr | 88% | 43,671 psi | 70% | 2398 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 36,898 psi | 59% | 2205 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 80% | 37,217 psi | 60% | 2218 fps | 98.4% |
| Hodgdon H4198 | <<locked>> | 80% | 46,543 psi | 75% | 2264 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 86% | 37,289 psi | 60% | 2224 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 37,768 psi | 61% | 2277 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,816 psi | 40% | 1276 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 38,522 psi | 62% | 2228 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 29,356 psi | 47% | 2100 fps | 98% |
| IMR 4064 | <<locked>> | 94% | 42,395 psi | 68% | 2283 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 39,740 psi | 64% | 2178 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 52,475 psi | 84% | 2287 fps | 100% |
| IMR 4895 | <<locked>> | 92% | 40,364 psi | 65% | 2310 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 82% | 34,751 psi | 56% | 2142 fps | 95.2% |
| Lovex D073.4 | <<locked>> | 80% | 43,816 psi | 70% | 2310 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 80% | 35,650 psi | 57% | 2169 fps | 96.6% |
| Lovex D073.6 | <<locked>> | 82% | 30,095 psi | 48% | 2100 fps | 95.7% |
| Lovex S053 | <<locked>> | 80% | 51,416 psi | 82% | 2241 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 40,988 psi | 66% | 2215 fps | 95.6% |
| Lovex S062 | <<locked>> | 88% | 34,447 psi | 55% | 2156 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 43,323 psi | 69% | 2254 fps | 100% |
| Norma 201 | <<locked>> | 84% | 34,127 psi | 55% | 2133 fps | 95.1% |
| Norma 202 | <<locked>> | 80% | 29,849 psi | 48% | 2064 fps | 96.3% |
| Norma 203B | <<locked>> | 92% | 38,711 psi | 62% | 2270 fps | 95% |
| Ramshot Big Game | <<locked>> | 94% | 41,379 psi | 66% | 2326 fps | 95.3% |
| Ramshot TAC | <<locked>> | 94% | 51,256 psi | 82% | 2411 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 88% | 40,524 psi | 65% | 2287 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 84% | 40,393 psi | 65% | 2228 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,787 psi | 40% | 1306 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 52,707 psi | 85% | 2323 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 36,608 psi | 59% | 2182 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 43,656 psi | 70% | 2411 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 34,374 psi | 55% | 2238 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 33,634 psi | 54% | 2106 fps | 97.3% |
| Rottweil R 902 | <<locked>> | 86% | 34,519 psi | 55% | 2136 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 96% | 37,434 psi | 60% | 2257 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 80% | 43,816 psi | 70% | 2310 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 30,095 psi | 48% | 2100 fps | 95.7% |
| Shooters World Precision | <<locked>> | 88% | 34,447 psi | 55% | 2156 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 38,870 psi | 62% | 2188 fps | 96% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 47,021 psi | 75% | 2054 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 40,756 psi | 65% | 2270 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 42,525 psi | 68% | 2352 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 39,030 psi | 63% | 2205 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 48,399 psi | 78% | 2382 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 40,509 psi | 65% | 2277 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,198 psi | 52% | 2037 fps | 97% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,049 psi | 42% | 1919 fps | 95.8% |
| Somchem S321 | <<locked>> | 80% | 34,345 psi | 55% | 2159 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 31,415 psi | 50% | 2041 fps | 97.7% |
| Somchem S341 | <<locked>> | 90% | 41,858 psi | 67% | 2290 fps | 95.6% |
| Somchem S355 | <<locked>> | 96% | 38,957 psi | 62% | 2267 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 45,339 psi | 73% | 2211 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 36,622 psi | 59% | 2119 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 31,981 psi | 51% | 2047 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 80% | 27,006 psi | 43% | 2011 fps | 98.2% |
| Vihtavuori N140 | <<locked>> | 80% | 28,268 psi | 45% | 2011 fps | 96.1% |
| Vihtavuori N150 | <<locked>> | 92% | 32,982 psi | 53% | 2129 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 82% | 34,505 psi | 55% | 2139 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 82% | 28,819 psi | 46% | 2041 fps | 95.6% |
| Winchester 748 | 74.4 gr | 82% | 33,069 psi | 53% | 2162 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 88% | 36,912 psi | 59% | 2228 fps | 95% |
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 102 powders for .458 Lott loaded with the .458 | 400gr | Swift A-Frame. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,559 fps; across all powders the maximum-charge window runs from 1,430 fps to 2,559 fps. Accurate 2495 gives the best case fill at 100 %, and 102 of the 102 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. 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 | 400gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Hodgdon Hybrid 100V, IMR 4166 Enduron 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.