Load Specifications
Load data in caliber .458 Lott with .458 | 350gr | Speer Hot-Cor bullet and 71 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 SNPE Vectan SP 10.
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% | 54,795 psi | 88% | 2516 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 55,259 psi | 89% | 2598 fps | 100% |
| Accurate 2200 | <<locked>> | 90% | 54,447 psi | 87% | 2631 fps | 95.9% |
| Accurate 2230 | <<locked>> | 90% | 54,810 psi | 88% | 2641 fps | 96.4% |
| Accurate 2460 | <<locked>> | 96% | 54,302 psi | 87% | 2618 fps | 99.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 43,250 psi | 69% | 2500 fps | 99.9% |
| Accurate 2520ᴾ | <<locked>> | 100% | 54,853 psi | 88% | 2664 fps | 99.4% |
| Accurate 4064ᴾ | <<locked>> | 100% | 40,205 psi | 64% | 2470 fps | 98.3% |
| Accurate LT-30 | <<locked>> | 92% | 55,332 psi | 89% | 2526 fps | 100% |
| Accurate LT-32 | <<locked>> | 92% | 55,840 psi | 90% | 2543 fps | 99.4% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 51,053 psi | 82% | 2602 fps | 96.3% |
| ADI AR 2207 | <<locked>> | 90% | 55,376 psi | 89% | 2559 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 53,780 psi | 86% | 2631 fps | 99.9% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 54,375 psi | 87% | 2625 fps | 98.1% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 51,547 psi | 83% | 2628 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 55,143 psi | 88% | 2720 fps | 97.8% |
| Alliant Reloder-10x | <<locked>> | 96% | 55,912 psi | 90% | 2618 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 53,795 psi | 86% | 2533 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 53,896 psi | 86% | 2526 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 98% | 54,360 psi | 87% | 2579 fps | 98.5% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 51,851 psi | 83% | 2648 fps | 98.3% |
| Hodgdon CFE223 | <<locked>> | 98% | 54,462 psi | 87% | 2723 fps | 96.2% |
| Hodgdon H322 | <<locked>> | 96% | 55,390 psi | 89% | 2651 fps | 100% |
| Hodgdon H335 | <<locked>> | 94% | 53,084 psi | 85% | 2628 fps | 99.6% |
| Hodgdon H4198 | <<locked>> | 88% | 54,273 psi | 87% | 2530 fps | 99.8% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 51,372 psi | 82% | 2618 fps | 97% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 46,340 psi | 74% | 2579 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,677 psi | 52% | 1526 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 50,169 psi | 80% | 2575 fps | 96.5% |
| IMR 3031ᴾ | <<locked>> | 100% | 48,878 psi | 78% | 2621 fps | 100% |
| IMR 4198 | <<locked>> | 94% | 54,157 psi | 87% | 2549 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 54,244 psi | 87% | 2484 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 54,375 psi | 87% | 2625 fps | 98.1% |
| Lovex D073.4 | <<locked>> | 90% | 55,274 psi | 89% | 2635 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 96% | 54,462 psi | 87% | 2621 fps | 98.8% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 48,414 psi | 78% | 2585 fps | 98.7% |
| Lovex S053 | <<locked>> | 86% | 55,941 psi | 90% | 2467 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 53,113 psi | 85% | 2552 fps | 96.6% |
| Lovex S062ᴾ | <<locked>> | 100% | 44,208 psi | 71% | 2487 fps | 96.3% |
| Norma 200 | <<locked>> | 92% | 56,246 psi | 90% | 2602 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 49,821 psi | 80% | 2559 fps | 97.4% |
| Norma 202ᴾ | <<locked>> | 100% | 49,676 psi | 80% | 2579 fps | 99.3% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 53,722 psi | 86% | 2648 fps | 96.6% |
| Ramshot X-Terminator | <<locked>> | 96% | 53,606 psi | 86% | 2585 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,706 psi | 52% | 1562 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 54,244 psi | 87% | 2516 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 54,868 psi | 88% | 2628 fps | 99.2% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 54,114 psi | 87% | 2608 fps | 99.5% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 47,007 psi | 75% | 2507 fps | 96.8% |
| Shooters World AR Plus | <<locked>> | 90% | 55,274 psi | 89% | 2635 fps | 99.3% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 48,414 psi | 78% | 2585 fps | 98.7% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 44,208 psi | 71% | 2487 fps | 96.3% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 55,985 psi | 90% | 2598 fps | 97.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 53,737 psi | 86% | 2297 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 54,331 psi | 87% | 2638 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 53,925 psi | 86% | 2592 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 49,603 psi | 80% | 2575 fps | 95.8% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 53,417 psi | 86% | 2536 fps | 99.5% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 42,844 psi | 69% | 2398 fps | 99% |
| Somchem S321 | <<locked>> | 98% | 55,956 psi | 90% | 2667 fps | 98.5% |
| Somchem S335ᴾ | <<locked>> | 100% | 51,474 psi | 83% | 2533 fps | 99.7% |
| Somchem S341ᴾ | <<locked>> | 100% | 52,214 psi | 84% | 2595 fps | 96.2% |
| Vihtavuori N120 | <<locked>> | 90% | 55,405 psi | 89% | 2510 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 53,243 psi | 85% | 2530 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 52,489 psi | 84% | 2533 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 44,498 psi | 71% | 2503 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 47,094 psi | 76% | 2516 fps | 99.2% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 55,361 psi | 89% | 2628 fps | 98.2% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 45,368 psi | 73% | 2507 fps | 98.6% |
| Winchester 748ᴾ | <<locked>> | 100% | 53,011 psi | 85% | 2664 fps | 98.7% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 48,762 psi | 78% | 2582 fps | 96.4% |
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% | 45,165 psi | 72% | 2385 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 29,834 psi | 48% | 2169 fps | 97.5% |
| Accurate 2200 | <<locked>> | 88% | 51,140 psi | 82% | 2582 fps | 95.2% |
| Accurate 2230 | <<locked>> | 88% | 50,995 psi | 82% | 2589 fps | 95.6% |
| Accurate 2460 | <<locked>> | 82% | 33,910 psi | 54% | 2280 fps | 95.7% |
| Accurate 2495 | <<locked>> | 82% | 23,859 psi | 38% | 2090 fps | 95.5% |
| Accurate 2520 | <<locked>> | 86% | 33,721 psi | 54% | 2313 fps | 95.2% |
| Accurate 4064 | <<locked>> | 90% | 29,298 psi | 47% | 2241 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 38,667 psi | 62% | 2270 fps | 98.4% |
| Accurate LT-32 | <<locked>> | 80% | 39,059 psi | 63% | 2277 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 98% | 48,124 psi | 77% | 2556 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 40,901 psi | 66% | 2359 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 36,027 psi | 58% | 2336 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 92% | 42,540 psi | 68% | 2438 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 27,369 psi | 44% | 2182 fps | 98.9% |
| Alliant Power Pro 1200-R | 76.6 gr | 88% | 42,482 psi | 68% | 2516 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,403 psi | 55% | 2277 fps | 99.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 42,235 psi | 68% | 2365 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,709 psi | 59% | 2260 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 86% | 38,029 psi | 61% | 2310 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 92% | 39,523 psi | 63% | 2444 fps | 95.6% |
| Hodgdon CFE223 | 91.1 gr | 96% | 50,894 psi | 82% | 2667 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 33,083 psi | 53% | 2274 fps | 96.8% |
| Hodgdon H335 | <<locked>> | 80% | 33,214 psi | 53% | 2280 fps | 95.7% |
| Hodgdon H4198 | <<locked>> | 80% | 42,583 psi | 68% | 2352 fps | 98.7% |
| Hodgdon H4895 | <<locked>> | 96% | 45,426 psi | 73% | 2523 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 43,511 psi | 70% | 2526 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,192 psi | 39% | 1362 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 44,425 psi | 71% | 2480 fps | 95.2% |
| IMR 3031 | <<locked>> | 82% | 27,891 psi | 45% | 2198 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 36,013 psi | 58% | 2267 fps | 99.9% |
| IMR 4227 | <<locked>> | 80% | 48,124 psi | 77% | 2402 fps | 100% |
| IMR 8208 XBR | <<locked>> | 92% | 42,540 psi | 68% | 2438 fps | 95.7% |
| Lovex D073.4 | <<locked>> | 80% | 38,943 psi | 62% | 2379 fps | 96.5% |
| Lovex D073.5 | <<locked>> | 86% | 38,667 psi | 62% | 2375 fps | 95.8% |
| Lovex D073.6 | <<locked>> | 90% | 34,403 psi | 55% | 2343 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 47,152 psi | 76% | 2356 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 47,166 psi | 76% | 2464 fps | 95.3% |
| Lovex S062 | <<locked>> | 98% | 41,568 psi | 67% | 2441 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 38,856 psi | 62% | 2349 fps | 100% |
| Norma 201 | <<locked>> | 94% | 41,350 psi | 66% | 2421 fps | 95.5% |
| Norma 202 | <<locked>> | 86% | 31,995 psi | 51% | 2257 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 96% | 47,050 psi | 75% | 2546 fps | 95.2% |
| Ramshot X-Terminator | <<locked>> | 92% | 47,094 psi | 76% | 2487 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,076 psi | 39% | 1394 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 47,979 psi | 77% | 2434 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 35,085 psi | 56% | 2297 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 84% | 33,910 psi | 54% | 2257 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 96% | 41,655 psi | 67% | 2418 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 80% | 38,943 psi | 62% | 2379 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 90% | 34,403 psi | 55% | 2343 fps | 95.4% |
| Shooters World Precision | <<locked>> | 98% | 41,568 psi | 67% | 2441 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 42,656 psi | 68% | 2402 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,482 psi | 70% | 2169 fps | 100% |
| SNPE Vectan SP 10 | 74.4 gr | 80% | 36,419 psi | 58% | 2339 fps | 96.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,838 psi | 56% | 2280 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 46,528 psi | 75% | 2526 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 32,706 psi | 52% | 2188 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 29,820 psi | 48% | 2142 fps | 95.5% |
| Somchem S321 | <<locked>> | 88% | 39,914 psi | 64% | 2415 fps | 95.3% |
| Somchem S335 | <<locked>> | 82% | 29,965 psi | 48% | 2149 fps | 95.5% |
| Somchem S341 | <<locked>> | 98% | 48,733 psi | 78% | 2546 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 80% | 41,031 psi | 66% | 2320 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,938 psi | 53% | 2198 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 80% | 28,631 psi | 46% | 2113 fps | 96.8% |
| Vihtavuori N135 | <<locked>> | 80% | 23,888 psi | 38% | 2060 fps | 95% |
| Vihtavuori N140 | <<locked>> | 86% | 30,385 psi | 49% | 2198 fps | 95% |
| Vihtavuori N530 | <<locked>> | 90% | 39,885 psi | 64% | 2385 fps | 95% |
| Vihtavuori N540 | <<locked>> | 90% | 33,025 psi | 53% | 2274 fps | 95.4% |
| Winchester 748 | <<locked>> | 90% | 38,218 psi | 61% | 2415 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 98% | 45,527 psi | 73% | 2530 fps | 95.6% |
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 71 powders for .458 Lott loaded with the .458 | 350gr | Speer Hot-Cor. Hodgdon CFE223 delivers the highest muzzle velocity at 2,723 fps; across all powders the maximum-charge window runs from 1,526 fps to 2,723 fps. Accurate 2015 gives the best case fill at 100 %, and 71 of the 71 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 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, SNPE Vectan SP 10 rank at the top here: for .458 Lott with the .458 | 350gr | Speer Hot-Cor they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.