Load Specifications
Load data in caliber .400 H&H Belt. Mag. with .410 | 325gr | Impala RNFP KO bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and Hodgdon CFE223.
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 2015 | <<locked>> | 92% | 56,202 psi | 88% | 2438 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 56,362 psi | 88% | 2513 fps | 98.5% |
| Accurate 2230 | <<locked>> | 84% | 57,508 psi | 90% | 2530 fps | 98.9% |
| Accurate 2460 | <<locked>> | 88% | 55,027 psi | 86% | 2464 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 57,014 psi | 89% | 2497 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 57,334 psi | 90% | 2539 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 57,334 psi | 90% | 2539 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 55,970 psi | 88% | 2526 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 56,391 psi | 88% | 2388 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 56,782 psi | 89% | 2408 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 54,723 psi | 86% | 2507 fps | 98.9% |
| ADI AR 2207 | <<locked>> | 82% | 54,969 psi | 86% | 2372 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 55,201 psi | 87% | 2497 fps | 98.4% |
| ADI AR 2219 | <<locked>> | 86% | 56,275 psi | 88% | 2497 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 57,392 psi | 90% | 2513 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 94% | 56,376 psi | 88% | 2500 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 55,492 psi | 87% | 2562 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 57,130 psi | 90% | 2641 fps | 98.6% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 53,998 psi | 85% | 2516 fps | 99.4% |
| Alliant Reloder-10x | <<locked>> | 88% | 56,246 psi | 88% | 2444 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 55,347 psi | 87% | 2536 fps | 98.6% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,109 psi | 75% | 2510 fps | 98.3% |
| Alliant Reloder-7 | <<locked>> | 82% | 55,840 psi | 88% | 2385 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 55,100 psi | 86% | 2388 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 57,334 psi | 90% | 2562 fps | 98.4% |
| Bofors RP3ᴾ | <<locked>> | 100% | 54,621 psi | 86% | 2533 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 92% | 56,710 psi | 89% | 2461 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 94% | 56,014 psi | 88% | 2546 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 92% | 57,522 psi | 90% | 2621 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 92% | 57,232 psi | 90% | 2507 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 55,680 psi | 87% | 2500 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 56,434 psi | 88% | 2536 fps | 97.6% |
| Hodgdon H4198 | <<locked>> | 84% | 54,824 psi | 86% | 2385 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 55,143 psi | 86% | 2520 fps | 99.3% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,812 psi | 61% | 2283 fps | 95.9% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 56,014 psi | 88% | 2582 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,664 psi | 54% | 1463 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 54,882 psi | 86% | 2500 fps | 99.2% |
| IMR 3031 | <<locked>> | 98% | 54,969 psi | 86% | 2526 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 53,751 psi | 84% | 2467 fps | 98.4% |
| IMR 4198 | <<locked>> | 88% | 56,188 psi | 88% | 2405 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 56,594 psi | 89% | 2566 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 94% | 57,392 psi | 90% | 2513 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 82% | 54,665 psi | 86% | 2467 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 54,868 psi | 86% | 2470 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 96% | 57,101 psi | 89% | 2539 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 55,288 psi | 87% | 2444 fps | 98.9% |
| Lovex S062ᴾ | <<locked>> | 100% | 57,566 psi | 90% | 2526 fps | 99.8% |
| Norma 200 | <<locked>> | 84% | 57,029 psi | 89% | 2428 fps | 100% |
| Norma 201 | <<locked>> | 96% | 57,145 psi | 90% | 2507 fps | 99.8% |
| Norma 202 | <<locked>> | 96% | 56,971 psi | 89% | 2513 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 57,725 psi | 90% | 2569 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 98% | 54,288 psi | 85% | 2543 fps | 98.7% |
| Ramshot TAC | <<locked>> | 92% | 54,824 psi | 86% | 2477 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 94% | 56,942 psi | 89% | 2543 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 90% | 55,695 psi | 87% | 2474 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,012 psi | 55% | 1499 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 57,435 psi | 90% | 2507 fps | 100% |
| ReloadSwiss RS 50ᴾ | <<locked>> | 100% | 57,232 psi | 90% | 2516 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 54,433 psi | 85% | 2589 fps | 98.6% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 51,169 psi | 80% | 2572 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 55,840 psi | 88% | 2464 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 57,537 psi | 90% | 2503 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 50,995 psi | 80% | 2477 fps | 99% |
| Shooters World AR Plus | <<locked>> | 82% | 54,665 psi | 86% | 2467 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 96% | 57,101 psi | 89% | 2539 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 57,566 psi | 90% | 2526 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 54,259 psi | 85% | 2434 fps | 99.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 57,232 psi | 90% | 2169 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 56,797 psi | 89% | 2507 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 52,431 psi | 82% | 2526 fps | 98.6% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 56,652 psi | 89% | 2457 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 56,318 psi | 88% | 2503 fps | 97.4% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 56,159 psi | 88% | 2526 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 56,188 psi | 88% | 2421 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 54,824 psi | 86% | 2411 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 55,405 psi | 87% | 2507 fps | 99.8% |
| Somchem S335 | <<locked>> | 94% | 55,143 psi | 86% | 2421 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 55,187 psi | 86% | 2497 fps | 98.8% |
| Somchem S355ᴾ | <<locked>> | 100% | 51,677 psi | 81% | 2474 fps | 98.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,768 psi | 59% | 2329 fps | 97.3% |
| Vihtavuori N120 | <<locked>> | 84% | 57,696 psi | 90% | 2359 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 56,173 psi | 88% | 2398 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 55,608 psi | 87% | 2408 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 55,680 psi | 87% | 2477 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 57,319 psi | 90% | 2490 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 49,980 psi | 78% | 2421 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 92% | 54,636 psi | 86% | 2470 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 98% | 55,564 psi | 87% | 2493 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,513 psi | 71% | 2362 fps | 97.7% |
| Winchester 748 | <<locked>> | 92% | 57,624 psi | 90% | 2569 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,375 psi | 85% | 2516 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 2015 | <<locked>> | 80% | 39,929 psi | 63% | 2208 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 49,864 psi | 78% | 2418 fps | 97.5% |
| Accurate 2230 | <<locked>> | 80% | 50,459 psi | 79% | 2431 fps | 97.9% |
| Accurate 2460 | <<locked>> | 80% | 42,859 psi | 67% | 2290 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 33,431 psi | 52% | 2146 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 36,724 psi | 58% | 2231 fps | 98.3% |
| Accurate 2520 | <<locked>> | 80% | 36,724 psi | 58% | 2231 fps | 98.3% |
| Accurate 4064 | <<locked>> | 80% | 31,604 psi | 50% | 2126 fps | 98.1% |
| Accurate LT-30 | <<locked>> | 80% | 47,297 psi | 74% | 2270 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,616 psi | 75% | 2283 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 80% | 36,463 psi | 57% | 2201 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 51,851 psi | 81% | 2336 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 39,189 psi | 61% | 2241 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 46,601 psi | 73% | 2365 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,232 psi | 60% | 2215 fps | 97% |
| Alliant AR-Comp | <<locked>> | 80% | 36,622 psi | 57% | 2228 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,540 psi | 68% | 2379 fps | 97.8% |
| Alliant Power Pro 2000-MR | 69.9 gr | 88% | 41,742 psi | 65% | 2385 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 33,866 psi | 53% | 2175 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,773 psi | 70% | 2293 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 38,769 psi | 61% | 2270 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 92% | 37,840 psi | 59% | 2316 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 52,750 psi | 83% | 2349 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,064 psi | 72% | 2270 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 42,018 psi | 66% | 2326 fps | 95.3% |
| Bofors RP3 | <<locked>> | 84% | 33,417 psi | 52% | 2178 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,234 psi | 63% | 2211 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,955 psi | 56% | 2224 fps | 97.1% |
| Hodgdon CFE223 | 65 gr | 80% | 39,088 psi | 61% | 2323 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 39,987 psi | 63% | 2260 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 80% | 45,861 psi | 72% | 2365 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 92% | 44,092 psi | 69% | 2356 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 80% | 48,921 psi | 77% | 2306 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 36,608 psi | 57% | 2211 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 36,738 psi | 58% | 2241 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 34,853 psi | 55% | 2221 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,962 psi | 41% | 1306 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 34,635 psi | 54% | 2156 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 32,518 psi | 51% | 2165 fps | 99.3% |
| IMR 4064 | <<locked>> | 88% | 38,421 psi | 60% | 2218 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 45,063 psi | 71% | 2260 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 37,289 psi | 58% | 2254 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 38,232 psi | 60% | 2215 fps | 97% |
| Lovex D073.4 | <<locked>> | 80% | 51,271 psi | 80% | 2421 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 42,598 psi | 67% | 2290 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 80% | 34,679 psi | 54% | 2188 fps | 97.8% |
| Lovex S060 | <<locked>> | 80% | 37,304 psi | 58% | 2152 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 32,561 psi | 51% | 2110 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 50,894 psi | 80% | 2352 fps | 100% |
| Norma 201 | <<locked>> | 80% | 36,289 psi | 57% | 2172 fps | 96.6% |
| Norma 202 | <<locked>> | 80% | 35,708 psi | 56% | 2185 fps | 98.6% |
| Norma 203B | <<locked>> | 86% | 38,116 psi | 60% | 2264 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 86% | 37,637 psi | 59% | 2267 fps | 95% |
| Ramshot TAC | <<locked>> | 88% | 48,573 psi | 76% | 2388 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,738 psi | 58% | 2221 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,263 psi | 65% | 2251 fps | 96.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,208 psi | 41% | 1339 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,496 psi | 67% | 2290 fps | 99.1% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 53,751 psi | 84% | 2470 fps | 95.4% |
| ReloadSwiss RS 52 | 66.2 gr | 86% | 39,798 psi | 62% | 2349 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 31,676 psi | 50% | 2182 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 40,263 psi | 63% | 2224 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 80% | 34,621 psi | 54% | 2133 fps | 96% |
| Rottweil R 903 | <<locked>> | 88% | 35,534 psi | 56% | 2215 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 80% | 51,271 psi | 80% | 2421 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,679 psi | 54% | 2188 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 32,561 psi | 51% | 2110 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 44,759 psi | 70% | 2297 fps | 98.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,996 psi | 81% | 2113 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,065 psi | 74% | 2375 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 38,928 psi | 61% | 2300 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,904 psi | 70% | 2300 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 46,412 psi | 73% | 2362 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 36,883 psi | 58% | 2215 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,565 psi | 59% | 2142 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,835 psi | 48% | 2028 fps | 98.3% |
| Somchem S321 | <<locked>> | 80% | 40,582 psi | 64% | 2280 fps | 97.9% |
| Somchem S335 | <<locked>> | 80% | 37,217 psi | 58% | 2152 fps | 99.4% |
| Somchem S341 | <<locked>> | 82% | 37,782 psi | 59% | 2224 fps | 95.3% |
| Somchem S355 | <<locked>> | 86% | 34,577 psi | 54% | 2178 fps | 95% |
| Somchem S365 | <<locked>> | 96% | 33,721 psi | 53% | 2238 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 51,677 psi | 81% | 2290 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 42,322 psi | 66% | 2211 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,304 psi | 58% | 2146 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,808 psi | 51% | 2129 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 33,678 psi | 53% | 2129 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 84% | 31,067 psi | 49% | 2087 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 37,942 psi | 59% | 2208 fps | 97% |
| Vihtavuori N540 | <<locked>> | 80% | 32,416 psi | 51% | 2116 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 37,956 psi | 59% | 2228 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 39,218 psi | 61% | 2290 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,524 psi | 65% | 2323 fps | 97.2% |
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 92 powders for .400 H&H Belt. Mag. loaded with the .410 | 325gr | Impala RNFP KO. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,641 fps; across all powders the maximum-charge window runs from 1,463 fps to 2,641 fps. Accurate 4064 gives the best case fill at 100 %, and 92 of the 92 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 325.0 gr projectile in 0.41" calls for a 1:21.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, ADI AR 2208, Alliant Reloder- TS 15.5 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 2000-MR, ReloadSwiss RS 52, Hodgdon CFE223 rank at the top here: for .400 H&H Belt. Mag. with the .410 | 325gr | Impala RNFP KO 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.