Load Specifications
Load data in caliber .458 Lott with .458 | 350gr | Hornady InterLock RN bullet and 64 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 H335 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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 52,997 psi | 85% | 2474 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 53,229 psi | 85% | 2556 fps | 100% |
| Accurate 2200 | <<locked>> | 92% | 56,057 psi | 90% | 2631 fps | 95.9% |
| Accurate 2230 | <<locked>> | 92% | 56,420 psi | 90% | 2641 fps | 96.3% |
| Accurate 2460 | <<locked>> | 98% | 55,840 psi | 90% | 2618 fps | 99.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 41,104 psi | 66% | 2451 fps | 99.7% |
| Accurate 2520ᴾ | <<locked>> | 100% | 52,286 psi | 84% | 2612 fps | 99% |
| Accurate 4064ᴾ | <<locked>> | 100% | 38,247 psi | 61% | 2421 fps | 97.7% |
| Accurate LT-30 | <<locked>> | 92% | 53,708 psi | 86% | 2487 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 92% | 54,215 psi | 87% | 2500 fps | 99.1% |
| ADI AR 2207 | <<locked>> | 90% | 53,388 psi | 86% | 2520 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 55,303 psi | 89% | 2631 fps | 99.9% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 52,533 psi | 84% | 2575 fps | 97.5% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 49,284 psi | 79% | 2582 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 56,391 psi | 90% | 2717 fps | 97.7% |
| Alliant Reloder-10x | <<locked>> | 96% | 53,838 psi | 86% | 2575 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 55,230 psi | 89% | 2533 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 55,347 psi | 89% | 2526 fps | 100% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 55,796 psi | 89% | 2575 fps | 98.5% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 49,516 psi | 79% | 2595 fps | 97.6% |
| Hodgdon CFE223ᴾ | <<locked>> | 100% | 55,927 psi | 90% | 2717 fps | 96.1% |
| Hodgdon H322 | <<locked>> | 96% | 53,185 psi | 85% | 2605 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 96% | 54,534 psi | 87% | 2628 fps | 99.5% |
| Hodgdon H4198 | <<locked>> | 90% | 55,927 psi | 90% | 2533 fps | 99.8% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 49,472 psi | 79% | 2569 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,547 psi | 52% | 1509 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 48,428 psi | 78% | 2526 fps | 95.8% |
| IMR 3031ᴾ | <<locked>> | 100% | 46,746 psi | 75% | 2572 fps | 99.8% |
| IMR 4198 | <<locked>> | 96% | 55,448 psi | 89% | 2549 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 55,956 psi | 90% | 2484 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 52,533 psi | 84% | 2575 fps | 97.5% |
| Lovex D073.4 | <<locked>> | 90% | 53,171 psi | 85% | 2589 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 98% | 56,086 psi | 90% | 2621 fps | 98.8% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 46,122 psi | 74% | 2536 fps | 98.1% |
| Lovex S053 | <<locked>> | 86% | 54,418 psi | 87% | 2434 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 51,314 psi | 82% | 2507 fps | 95.8% |
| Norma 200 | <<locked>> | 92% | 54,317 psi | 87% | 2562 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 47,805 psi | 77% | 2510 fps | 96.7% |
| Norma 202ᴾ | <<locked>> | 100% | 47,732 psi | 77% | 2533 fps | 98.9% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 51,590 psi | 83% | 2595 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 98% | 54,998 psi | 88% | 2582 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,401 psi | 52% | 1542 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 55,970 psi | 90% | 2523 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 56,304 psi | 90% | 2628 fps | 99.1% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 52,156 psi | 84% | 2562 fps | 99.2% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 45,063 psi | 72% | 2457 fps | 96% |
| Shooters World AR Plus | <<locked>> | 90% | 53,171 psi | 85% | 2589 fps | 98.9% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 46,122 psi | 74% | 2536 fps | 98.1% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 54,085 psi | 87% | 2552 fps | 97.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 54,926 psi | 88% | 2293 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 55,695 psi | 89% | 2638 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 55,071 psi | 88% | 2589 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 51,561 psi | 83% | 2493 fps | 99.1% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,249 psi | 66% | 2356 fps | 98.5% |
| Somchem S321 | <<locked>> | 98% | 53,621 psi | 86% | 2615 fps | 98% |
| Somchem S335ᴾ | <<locked>> | 100% | 49,588 psi | 80% | 2490 fps | 99.5% |
| Vihtavuori N120 | <<locked>> | 90% | 53,476 psi | 86% | 2474 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 54,563 psi | 87% | 2530 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 50,575 psi | 81% | 2490 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,525 psi | 68% | 2457 fps | 99.8% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 45,063 psi | 72% | 2467 fps | 98.7% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 53,258 psi | 85% | 2579 fps | 97.6% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 43,584 psi | 70% | 2461 fps | 98% |
| Winchester 748ᴾ | <<locked>> | 100% | 50,908 psi | 82% | 2612 fps | 98.1% |
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% | 43,685 psi | 70% | 2343 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 28,674 psi | 46% | 2129 fps | 96.8% |
| Accurate 2200 | <<locked>> | 90% | 52,547 psi | 84% | 2582 fps | 95.1% |
| Accurate 2230 | <<locked>> | 90% | 52,605 psi | 84% | 2589 fps | 95.6% |
| Accurate 2460 | <<locked>> | 84% | 34,867 psi | 56% | 2283 fps | 95.7% |
| Accurate 2495 | <<locked>> | 84% | 24,250 psi | 39% | 2090 fps | 95.4% |
| Accurate 2520 | <<locked>> | 88% | 34,505 psi | 55% | 2316 fps | 95.1% |
| Accurate 4064 | <<locked>> | 94% | 31,647 psi | 51% | 2283 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 37,405 psi | 60% | 2231 fps | 97.9% |
| Accurate LT-32 | <<locked>> | 80% | 37,797 psi | 61% | 2234 fps | 96% |
| ADI AR 2207 | <<locked>> | 80% | 39,407 psi | 63% | 2320 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 34,722 psi | 56% | 2293 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 94% | 43,511 psi | 70% | 2434 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 26,295 psi | 42% | 2136 fps | 98.3% |
| Alliant Power Pro 1200-R | 75.5 gr | 90% | 43,497 psi | 70% | 2516 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,112 psi | 53% | 2238 fps | 99% |
| Alliant Reloder-7 | <<locked>> | 80% | 40,799 psi | 65% | 2326 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,549 psi | 57% | 2221 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 39,102 psi | 63% | 2313 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 94% | 40,495 psi | 65% | 2448 fps | 95.6% |
| Hodgdon CFE223 | <<locked>> | 98% | 52,301 psi | 84% | 2664 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 31,821 psi | 51% | 2228 fps | 96% |
| Hodgdon H335 | 73.5 gr | 82% | 34,229 psi | 55% | 2287 fps | 95.7% |
| Hodgdon H4198 | <<locked>> | 80% | 41,278 psi | 66% | 2313 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 98% | 46,456 psi | 74% | 2520 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,946 psi | 38% | 1345 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 45,484 psi | 73% | 2477 fps | 95% |
| IMR 3031 | <<locked>> | 84% | 28,500 psi | 46% | 2201 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 34,983 psi | 56% | 2234 fps | 99.7% |
| IMR 4227 | <<locked>> | 80% | 46,818 psi | 75% | 2365 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 43,511 psi | 70% | 2434 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 80% | 37,434 psi | 60% | 2333 fps | 95.8% |
| Lovex D073.5 | <<locked>> | 88% | 39,697 psi | 64% | 2375 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 92% | 35,128 psi | 56% | 2339 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 45,948 psi | 74% | 2326 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 48,298 psi | 77% | 2461 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 37,376 psi | 60% | 2306 fps | 99.9% |
| Norma 201 | <<locked>> | 96% | 42,235 psi | 68% | 2418 fps | 95.4% |
| Norma 202 | <<locked>> | 88% | 32,764 psi | 53% | 2260 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 98% | 48,269 psi | 77% | 2546 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 96% | 51,561 psi | 83% | 2533 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,815 psi | 38% | 1375 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 46,601 psi | 75% | 2398 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 35,955 psi | 58% | 2297 fps | 95% |
| Rottweil R 901 | <<locked>> | 86% | 34,577 psi | 55% | 2257 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 98% | 42,438 psi | 68% | 2411 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 80% | 37,434 psi | 60% | 2333 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 92% | 35,128 psi | 56% | 2339 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 43,976 psi | 71% | 2405 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 42,482 psi | 68% | 2139 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 35,070 psi | 56% | 2297 fps | 95.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,605 psi | 54% | 2238 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 33,576 psi | 54% | 2192 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 30,618 psi | 49% | 2142 fps | 95.5% |
| Somchem S321 | <<locked>> | 90% | 40,959 psi | 66% | 2418 fps | 95.3% |
| Somchem S335 | <<locked>> | 84% | 30,676 psi | 49% | 2149 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 80% | 39,566 psi | 63% | 2283 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,792 psi | 51% | 2159 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 80% | 27,644 psi | 44% | 2073 fps | 96.1% |
| Vihtavuori N135 | <<locked>> | 84% | 25,933 psi | 42% | 2110 fps | 95.8% |
| Vihtavuori N140 | <<locked>> | 88% | 31,154 psi | 50% | 2201 fps | 95% |
| Vihtavuori N530 | <<locked>> | 94% | 43,729 psi | 70% | 2434 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 92% | 33,779 psi | 54% | 2274 fps | 95.3% |
| Winchester 748 | 80.7 gr | 92% | 39,117 psi | 63% | 2411 fps | 95.3% |
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 64 powders for .458 Lott loaded with the .458 | 350gr | Hornady InterLock RN. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,717 fps; across all powders the maximum-charge window runs from 1,509 fps to 2,717 fps. Accurate 2015 gives the best case fill at 100 %, and 64 of the 64 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 H335, Winchester 748 rank at the top here: for .458 Lott with the .458 | 350gr | Hornady InterLock RN 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.