Load Specifications
Load data in caliber .458 Lott with .458 | 400gr | Speer Soft Point Flat Nose 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 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% | 55,695 psi | 89% | 2388 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 55,201 psi | 89% | 2451 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 52,866 psi | 85% | 2487 fps | 97.9% |
| Accurate 2230 | <<locked>> | 84% | 53,287 psi | 85% | 2497 fps | 98.2% |
| Accurate 2460 | <<locked>> | 90% | 53,780 psi | 86% | 2474 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 54,447 psi | 87% | 2500 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 54,737 psi | 88% | 2523 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 50,459 psi | 81% | 2487 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 53,287 psi | 85% | 2372 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 53,751 psi | 86% | 2388 fps | 100% |
| ADI AR 2206H | <<locked>> | 96% | 54,056 psi | 87% | 2520 fps | 98.7% |
| ADI AR 2207 | <<locked>> | 84% | 54,273 psi | 87% | 2392 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 51,677 psi | 83% | 2467 fps | 97.7% |
| ADI AR 2219 | <<locked>> | 88% | 56,391 psi | 90% | 2520 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 53,751 psi | 86% | 2487 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 96% | 55,680 psi | 89% | 2516 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 54,969 psi | 88% | 2579 fps | 99.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 53,519 psi | 86% | 2605 fps | 97.8% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 50,067 psi | 80% | 2484 fps | 98.9% |
| Alliant Reloder-10x | <<locked>> | 90% | 55,579 psi | 89% | 2464 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 54,476 psi | 87% | 2546 fps | 98.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 44,512 psi | 71% | 2467 fps | 97.3% |
| Alliant Reloder-7 | <<locked>> | 84% | 55,506 psi | 89% | 2408 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 55,288 psi | 89% | 2411 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 53,635 psi | 86% | 2533 fps | 97.7% |
| Bofors RP3ᴾ | <<locked>> | 100% | 50,009 psi | 80% | 2493 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 92% | 53,142 psi | 85% | 2438 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 96% | 55,347 psi | 89% | 2559 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 92% | 53,650 psi | 86% | 2589 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 90% | 54,650 psi | 88% | 2500 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 55,753 psi | 89% | 2523 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 52,243 psi | 84% | 2503 fps | 96.7% |
| Hodgdon H4198 | <<locked>> | 84% | 55,288 psi | 89% | 2411 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 54,418 psi | 87% | 2530 fps | 99.2% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 56,072 psi | 90% | 2602 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,939 psi | 54% | 1467 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 56,231 psi | 90% | 2536 fps | 99.3% |
| IMR 3031 | <<locked>> | 98% | 56,318 psi | 90% | 2566 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 54,418 psi | 87% | 2497 fps | 98.4% |
| IMR 4198 | <<locked>> | 90% | 56,362 psi | 90% | 2428 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 55,811 psi | 89% | 2579 fps | 99% |
| IMR 8208 XBR | <<locked>> | 94% | 53,751 psi | 86% | 2487 fps | 99.4% |
| Lovex D073.4 | <<locked>> | 84% | 54,085 psi | 87% | 2484 fps | 100% |
| Lovex D073.5 | <<locked>> | 90% | 53,693 psi | 86% | 2480 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 98% | 56,072 psi | 90% | 2549 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 55,085 psi | 88% | 2464 fps | 98.8% |
| Lovex S062ᴾ | <<locked>> | 100% | 53,330 psi | 86% | 2497 fps | 99.5% |
| Norma 200 | <<locked>> | 86% | 55,535 psi | 89% | 2441 fps | 100% |
| Norma 201 | <<locked>> | 98% | 56,086 psi | 90% | 2520 fps | 99.6% |
| Norma 202 | <<locked>> | 98% | 56,362 psi | 90% | 2530 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 53,447 psi | 86% | 2536 fps | 98.7% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 54,143 psi | 87% | 2559 fps | 98.6% |
| Ramshot TAC | <<locked>> | 94% | 54,592 psi | 88% | 2493 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 94% | 53,011 psi | 85% | 2513 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 92% | 55,608 psi | 89% | 2493 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,098 psi | 55% | 1499 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 53,809 psi | 86% | 2480 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 54,027 psi | 87% | 2605 fps | 98.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 47,616 psi | 76% | 2536 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 94% | 53,983 psi | 87% | 2470 fps | 100% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 56,333 psi | 90% | 2513 fps | 99.6% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 46,340 psi | 74% | 2434 fps | 98.2% |
| Shooters World AR Plus | <<locked>> | 84% | 54,085 psi | 87% | 2484 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 98% | 56,072 psi | 90% | 2549 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 53,330 psi | 86% | 2497 fps | 99.5% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 54,143 psi | 87% | 2454 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 54,447 psi | 87% | 2162 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 53,040 psi | 85% | 2484 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 48,733 psi | 78% | 2490 fps | 97.8% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 53,272 psi | 85% | 2438 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 96% | 55,782 psi | 89% | 2516 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 55,956 psi | 90% | 2543 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 55,796 psi | 89% | 2438 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 51,300 psi | 82% | 2392 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 54,984 psi | 88% | 2523 fps | 99.7% |
| Somchem S335 | <<locked>> | 96% | 54,259 psi | 87% | 2434 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 54,969 psi | 88% | 2516 fps | 98.7% |
| Somchem S355ᴾ | <<locked>> | 100% | 47,558 psi | 76% | 2438 fps | 98.2% |
| Vihtavuori N120 | <<locked>> | 84% | 54,215 psi | 87% | 2346 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 55,651 psi | 89% | 2415 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 55,230 psi | 89% | 2428 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 54,679 psi | 88% | 2490 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 53,374 psi | 86% | 2467 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 45,818 psi | 73% | 2385 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 94% | 54,346 psi | 87% | 2487 fps | 99.5% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 55,027 psi | 88% | 2507 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 42,221 psi | 68% | 2323 fps | 96.6% |
| Winchester 748 | <<locked>> | 96% | 56,333 psi | 90% | 2572 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 98% | 55,230 psi | 89% | 2549 fps | 99.2% |
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% | 52,098 psi | 84% | 2346 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 35,926 psi | 58% | 2172 fps | 99.9% |
| Accurate 2200 | <<locked>> | 80% | 46,354 psi | 74% | 2385 fps | 96.6% |
| Accurate 2230 | <<locked>> | 80% | 46,296 psi | 74% | 2392 fps | 97% |
| Accurate 2460 | <<locked>> | 80% | 38,595 psi | 62% | 2247 fps | 98.9% |
| Accurate 2495 | <<locked>> | 80% | 28,326 psi | 45% | 2077 fps | 99% |
| Accurate 2520 | <<locked>> | 80% | 33,910 psi | 54% | 2195 fps | 97.5% |
| Accurate 4064 | <<locked>> | 80% | 26,832 psi | 43% | 2054 fps | 96.2% |
| Accurate LT-30 | <<locked>> | 80% | 44,585 psi | 71% | 2251 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 44,962 psi | 72% | 2264 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 84% | 37,318 psi | 60% | 2244 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 48,240 psi | 77% | 2316 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 40,567 psi | 65% | 2290 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 43,091 psi | 69% | 2336 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,838 psi | 56% | 2175 fps | 95.8% |
| Alliant AR-Comp | <<locked>> | 80% | 33,054 psi | 53% | 2192 fps | 100% |
| Alliant Power Pro 1200-R | 74.2 gr | 80% | 39,682 psi | 64% | 2336 fps | 96.7% |
| Alliant Power Pro 2000-MR | 90.9 gr | 92% | 43,888 psi | 70% | 2448 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 34,360 psi | 55% | 2215 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,973 psi | 66% | 2264 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 39,929 psi | 64% | 2316 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 96% | 39,073 psi | 63% | 2365 fps | 95.7% |
| Alliant Reloder-7 | <<locked>> | 80% | 49,182 psi | 79% | 2329 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 42,917 psi | 69% | 2247 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 44,048 psi | 71% | 2385 fps | 95.7% |
| Bofors RP3 | <<locked>> | 88% | 33,533 psi | 54% | 2211 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,188 psi | 60% | 2178 fps | 97.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 32,256 psi | 52% | 2175 fps | 95.7% |
| Hodgdon CFE223 | 84.9 gr | 84% | 40,886 psi | 66% | 2382 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 39,421 psi | 63% | 2277 fps | 99.7% |
| Hodgdon H335 | <<locked>> | 80% | 39,943 psi | 64% | 2293 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 96% | 45,759 psi | 73% | 2405 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 80% | 49,052 psi | 79% | 2329 fps | 100% |
| Hodgdon H4895 | <<locked>> | 82% | 35,143 psi | 56% | 2208 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 35,636 psi | 57% | 2264 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,092 psi | 40% | 1306 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 36,361 psi | 58% | 2218 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 31,546 psi | 51% | 2175 fps | 99% |
| IMR 4064 | <<locked>> | 90% | 40,059 psi | 64% | 2274 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 42,061 psi | 67% | 2238 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 38,261 psi | 61% | 2300 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 34,838 psi | 56% | 2175 fps | 95.8% |
| Lovex D073.4 | <<locked>> | 80% | 47,021 psi | 75% | 2388 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 38,334 psi | 61% | 2244 fps | 97.8% |
| Lovex D073.6 | <<locked>> | 80% | 30,618 psi | 49% | 2136 fps | 96.4% |
| Lovex S060 | <<locked>> | 84% | 38,624 psi | 62% | 2205 fps | 95.5% |
| Lovex S062 | <<locked>> | 84% | 32,735 psi | 52% | 2149 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 46,238 psi | 74% | 2320 fps | 100% |
| Norma 201 | <<locked>> | 80% | 32,329 psi | 52% | 2123 fps | 95% |
| Norma 202 | <<locked>> | 80% | 32,097 psi | 51% | 2139 fps | 97.6% |
| Norma 203B | <<locked>> | 88% | 36,709 psi | 59% | 2260 fps | 95% |
| Ramshot Big Game | <<locked>> | 90% | 38,986 psi | 63% | 2316 fps | 95.2% |
| Ramshot TAC | <<locked>> | 90% | 47,964 psi | 77% | 2398 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 84% | 38,116 psi | 61% | 2274 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 37,869 psi | 61% | 2211 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,208 psi | 40% | 1339 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,044 psi | 63% | 2254 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 41,336 psi | 66% | 2402 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 32,343 psi | 52% | 2224 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 35,853 psi | 57% | 2178 fps | 98.3% |
| Rottweil R 902 | <<locked>> | 82% | 32,648 psi | 52% | 2123 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 92% | 35,766 psi | 57% | 2251 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 47,021 psi | 75% | 2388 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,618 psi | 49% | 2136 fps | 96.4% |
| Shooters World Precision | <<locked>> | 84% | 32,735 psi | 52% | 2149 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 41,321 psi | 66% | 2264 fps | 97.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 49,182 psi | 79% | 2103 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 43,584 psi | 70% | 2346 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 40,234 psi | 65% | 2346 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 41,597 psi | 67% | 2274 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 45,382 psi | 73% | 2369 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 38,232 psi | 61% | 2264 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,214 psi | 55% | 2106 fps | 98% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,760 psi | 45% | 1988 fps | 97.1% |
| Somchem S321 | <<locked>> | 80% | 36,825 psi | 59% | 2238 fps | 96.8% |
| Somchem S335 | <<locked>> | 80% | 33,547 psi | 54% | 2113 fps | 98.6% |
| Somchem S341 | <<locked>> | 86% | 39,262 psi | 63% | 2277 fps | 95.5% |
| Somchem S355 | <<locked>> | 90% | 34,983 psi | 56% | 2218 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 48,211 psi | 77% | 2274 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 38,943 psi | 62% | 2185 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,142 psi | 55% | 2116 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 80% | 29,167 psi | 47% | 2083 fps | 99.1% |
| Vihtavuori N140 | <<locked>> | 80% | 30,298 psi | 49% | 2083 fps | 97.4% |
| Vihtavuori N150 | <<locked>> | 88% | 31,227 psi | 50% | 2119 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 34,534 psi | 55% | 2165 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 29,037 psi | 47% | 2067 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 39,537 psi | 63% | 2277 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 33,243 psi | 53% | 2195 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 86% | 37,173 psi | 60% | 2264 fps | 95.8% |
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 107 powders for .458 Lott loaded with the .458 | 400gr | Speer Soft Point Flat Nose. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,605 fps; across all powders the maximum-charge window runs from 1,467 fps to 2,605 fps. Accurate 2495 gives the best case fill at 100 %, and 107 of the 107 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. Accurate 2495, Accurate 4064, Accurate 4350 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 | 400gr | Speer Soft Point Flat Nose 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.