Load Specifications
Load data in caliber .458 Lott with .458 | 400gr | Atomic 29 HP 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 H335 and Hodgdon H322.
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% | 53,084 psi | 85% | 2274 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 52,982 psi | 85% | 2349 fps | 100% |
| Accurate 2200 | <<locked>> | 92% | 56,260 psi | 90% | 2428 fps | 96.8% |
| Accurate 2230 | <<locked>> | 92% | 56,362 psi | 90% | 2434 fps | 97.2% |
| Accurate 2460 | <<locked>> | 98% | 55,376 psi | 89% | 2408 fps | 99.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 40,582 psi | 65% | 2257 fps | 99.9% |
| Accurate 2520ᴾ | <<locked>> | 100% | 52,170 psi | 84% | 2408 fps | 99.4% |
| Accurate 4064ᴾ | <<locked>> | 100% | 37,797 psi | 61% | 2231 fps | 98.4% |
| Accurate LT-30 | <<locked>> | 92% | 53,737 psi | 86% | 2287 fps | 100% |
| Accurate LT-32 | <<locked>> | 92% | 54,259 psi | 87% | 2300 fps | 99.5% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 48,994 psi | 79% | 2356 fps | 96.5% |
| ADI AR 2207 | <<locked>> | 90% | 53,461 psi | 86% | 2310 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 55,361 psi | 89% | 2425 fps | 100% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 52,301 psi | 84% | 2375 fps | 98.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 49,240 psi | 79% | 2375 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 56,405 psi | 90% | 2507 fps | 98.5% |
| Alliant Reloder-10x | <<locked>> | 96% | 53,766 psi | 86% | 2365 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 54,998 psi | 88% | 2323 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 55,376 psi | 89% | 2326 fps | 100% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 55,840 psi | 90% | 2375 fps | 99% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 49,385 psi | 79% | 2395 fps | 98.4% |
| Hodgdon CFE223ᴾ | <<locked>> | 100% | 55,941 psi | 90% | 2513 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 96% | 53,287 psi | 85% | 2398 fps | 100% |
| Hodgdon H335 | <<locked>> | 96% | 54,549 psi | 87% | 2421 fps | 99.8% |
| Hodgdon H4198 | <<locked>> | 90% | 55,869 psi | 90% | 2326 fps | 100% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 49,182 psi | 79% | 2369 fps | 97.1% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 44,324 psi | 71% | 2333 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,242 psi | 52% | 1368 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 48,356 psi | 78% | 2333 fps | 96.8% |
| IMR 3031ᴾ | <<locked>> | 100% | 46,659 psi | 75% | 2369 fps | 100% |
| IMR 4198 | <<locked>> | 96% | 55,564 psi | 89% | 2339 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 55,970 psi | 90% | 2277 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 52,301 psi | 84% | 2375 fps | 98.2% |
| Lovex D073.4 | <<locked>> | 90% | 52,895 psi | 85% | 2382 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 98% | 55,622 psi | 89% | 2415 fps | 99.2% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 45,774 psi | 73% | 2336 fps | 98.7% |
| Lovex S053 | <<locked>> | 86% | 54,273 psi | 87% | 2228 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 51,097 psi | 82% | 2310 fps | 96.7% |
| Lovex S062ᴾ | <<locked>> | 100% | 41,945 psi | 67% | 2244 fps | 96.4% |
| Norma 200 | <<locked>> | 92% | 53,911 psi | 86% | 2349 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 47,616 psi | 76% | 2316 fps | 97.6% |
| Norma 202ᴾ | <<locked>> | 100% | 47,601 psi | 76% | 2333 fps | 99.4% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 51,372 psi | 82% | 2395 fps | 96.8% |
| Ramshot X-Terminator | <<locked>> | 98% | 54,810 psi | 88% | 2382 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,111 psi | 51% | 1401 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 55,782 psi | 89% | 2310 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 56,420 psi | 90% | 2421 fps | 99.6% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 51,517 psi | 83% | 2356 fps | 99.6% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 44,788 psi | 72% | 2267 fps | 97% |
| Shooters World AR Plus | <<locked>> | 90% | 52,895 psi | 85% | 2382 fps | 99.4% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 45,774 psi | 73% | 2336 fps | 98.7% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 41,945 psi | 67% | 2244 fps | 96.4% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 53,882 psi | 86% | 2352 fps | 98% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 54,882 psi | 88% | 2096 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 55,535 psi | 89% | 2428 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 55,288 psi | 89% | 2382 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 47,456 psi | 76% | 2329 fps | 96% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 51,459 psi | 83% | 2293 fps | 99.6% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,089 psi | 66% | 2169 fps | 99.1% |
| Somchem S321 | <<locked>> | 98% | 53,563 psi | 86% | 2415 fps | 98.6% |
| Somchem S335ᴾ | <<locked>> | 100% | 49,530 psi | 79% | 2293 fps | 99.8% |
| Somchem S341ᴾ | <<locked>> | 100% | 49,806 psi | 80% | 2349 fps | 96.3% |
| Vihtavuori N120 | <<locked>> | 90% | 53,548 psi | 86% | 2267 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 54,476 psi | 87% | 2323 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 50,647 psi | 81% | 2293 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,351 psi | 68% | 2264 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 45,020 psi | 72% | 2274 fps | 99.3% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 53,026 psi | 85% | 2375 fps | 98.3% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 43,352 psi | 70% | 2270 fps | 98.7% |
| Winchester 748ᴾ | <<locked>> | 100% | 50,807 psi | 81% | 2411 fps | 98.8% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 46,659 psi | 75% | 2336 fps | 96.5% |
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% | 43,497 psi | 70% | 2152 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 28,137 psi | 45% | 1955 fps | 97.6% |
| Accurate 2200 | <<locked>> | 88% | 49,284 psi | 79% | 2336 fps | 95.5% |
| Accurate 2230 | <<locked>> | 86% | 45,281 psi | 73% | 2287 fps | 95% |
| Accurate 2460 | <<locked>> | 80% | 29,878 psi | 48% | 2011 fps | 95% |
| Accurate 2495 | <<locked>> | 82% | 21,843 psi | 35% | 1873 fps | 95.4% |
| Accurate 2520 | <<locked>> | 86% | 31,807 psi | 51% | 2090 fps | 95.3% |
| Accurate 4064 | <<locked>> | 90% | 27,166 psi | 44% | 2018 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 37,304 psi | 60% | 2051 fps | 98.6% |
| Accurate LT-32 | <<locked>> | 80% | 37,681 psi | 60% | 2057 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 96% | 43,265 psi | 69% | 2270 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 39,131 psi | 63% | 2126 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 34,403 psi | 55% | 2110 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 90% | 38,247 psi | 61% | 2162 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 25,846 psi | 41% | 1965 fps | 99% |
| Alliant Power Pro 1200-R | 67.2 gr | 88% | 40,451 psi | 65% | 2274 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,735 psi | 52% | 2057 fps | 99.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 40,393 psi | 65% | 2133 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,317 psi | 57% | 2044 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 86% | 36,463 psi | 58% | 2087 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 90% | 35,114 psi | 56% | 2165 fps | 95% |
| Hodgdon CFE223 | <<locked>> | 96% | 48,820 psi | 78% | 2415 fps | 95.6% |
| Hodgdon H322 | 61.1 gr | 80% | 31,560 psi | 51% | 2054 fps | 97% |
| Hodgdon H335 | 65.3 gr | 80% | 31,604 psi | 51% | 2060 fps | 95.9% |
| Hodgdon H4198 | <<locked>> | 80% | 41,205 psi | 66% | 2126 fps | 98.8% |
| Hodgdon H4895 | <<locked>> | 94% | 40,640 psi | 65% | 2234 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 41,568 psi | 67% | 2287 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,757 psi | 38% | 1220 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 42,583 psi | 68% | 2244 fps | 95.4% |
| IMR 3031 | <<locked>> | 82% | 26,324 psi | 42% | 1982 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 34,722 psi | 56% | 2047 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 46,659 psi | 75% | 2165 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 38,247 psi | 61% | 2162 fps | 95.2% |
| Lovex D073.4 | <<locked>> | 80% | 36,985 psi | 59% | 2149 fps | 96.7% |
| Lovex D073.5 | <<locked>> | 84% | 34,127 psi | 55% | 2096 fps | 95.1% |
| Lovex D073.6 | <<locked>> | 90% | 32,460 psi | 52% | 2113 fps | 95.6% |
| Lovex S053 | <<locked>> | 80% | 45,701 psi | 73% | 2126 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 45,440 psi | 73% | 2228 fps | 95.5% |
| Lovex S062 | <<locked>> | 96% | 37,130 psi | 60% | 2165 fps | 95% |
| Norma 200 | <<locked>> | 80% | 36,811 psi | 59% | 2116 fps | 100% |
| Norma 201 | <<locked>> | 94% | 39,392 psi | 63% | 2188 fps | 95.7% |
| Norma 202 | <<locked>> | 86% | 30,313 psi | 49% | 2037 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 96% | 45,049 psi | 72% | 2303 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 92% | 45,078 psi | 72% | 2247 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,641 psi | 38% | 1250 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 46,485 psi | 75% | 2201 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 33,475 psi | 54% | 2073 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 82% | 29,936 psi | 48% | 1991 fps | 95% |
| Rottweil R 902 | <<locked>> | 94% | 37,231 psi | 60% | 2142 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 36,985 psi | 59% | 2149 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 90% | 32,460 psi | 52% | 2113 fps | 95.6% |
| Shooters World Precision | <<locked>> | 96% | 37,130 psi | 60% | 2165 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 40,886 psi | 66% | 2172 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 42,322 psi | 68% | 1955 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 34,722 psi | 56% | 2113 fps | 96.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,388 psi | 54% | 2060 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 44,440 psi | 71% | 2287 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 31,212 psi | 50% | 1975 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 28,427 psi | 46% | 1936 fps | 95.7% |
| Somchem S321 | <<locked>> | 88% | 38,072 psi | 61% | 2185 fps | 95.6% |
| Somchem S335 | <<locked>> | 82% | 28,398 psi | 46% | 1936 fps | 95.6% |
| Somchem S341 | <<locked>> | 98% | 46,615 psi | 75% | 2303 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 39,320 psi | 63% | 2090 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,473 psi | 50% | 1985 fps | 99.1% |
| Vihtavuori N133 | <<locked>> | 80% | 27,296 psi | 44% | 1909 fps | 97.1% |
| Vihtavuori N135 | <<locked>> | 80% | 22,466 psi | 36% | 1857 fps | 95.1% |
| Vihtavuori N140 | <<locked>> | 86% | 28,877 psi | 46% | 1985 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 90% | 38,087 psi | 61% | 2156 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 90% | 31,386 psi | 50% | 2057 fps | 95.6% |
| Winchester 748 | <<locked>> | 90% | 36,506 psi | 59% | 2182 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 98% | 43,656 psi | 70% | 2290 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 90 powders for .458 Lott loaded with the .458 | 400gr | Atomic 29 HP. Hodgdon CFE223 delivers the highest muzzle velocity at 2,513 fps; across all powders the maximum-charge window runs from 1,368 fps to 2,513 fps. Accurate 2015 gives the best case fill at 100 %, and 90 of the 90 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. The 400.0 gr projectile in 0.458" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. 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, Hodgdon H322 rank at the top here: for .458 Lott with the .458 | 400gr | Atomic 29 HP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2208, Alliant Power Pro 2000-MR, Alliant Reloder-15 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.