Load Specifications
Bullet Manufacturer:North Fork
Bullet Weight:430 gr
Bullet Diameter:0.416"
Bullet Length:<<locked>>
Caliber:.416 Weath. Mag. load data
Case Length (l3):2.913"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:140 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:26"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:19.5
Load data in caliber .416 Weath. Mag. with .416 | 430gr | North Fork Semi Spitz bullet and 106 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Hodgdon Superformance.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 54,215 psi | 85% | 2339 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,274 psi | 87% | 2415 fps | 99.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,185 psi | 82% | 2461 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 54,636 psi | 86% | 2392 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,781 psi | 86% | 2497 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 53,896 psi | 84% | 2595 fps | 97.6% |
| ADI AR 2206H | <<locked>> | 82% | 57,029 psi | 89% | 2457 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,752 psi | 86% | 2425 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,593 psi | 87% | 2543 fps | 99.3% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,142 psi | 83% | 2543 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 34,127 psi | 53% | 2254 fps | 96.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,392 psi | 90% | 2582 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,332 psi | 87% | 2441 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,651 psi | 87% | 2464 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,564 psi | 87% | 2543 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,782 psi | 89% | 2566 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,868 psi | 86% | 2536 fps | 99.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,764 psi | 81% | 2539 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,023 psi | 77% | 2477 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,728 psi | 67% | 2425 fps | 99.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,840 psi | 88% | 2651 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,753 psi | 89% | 2480 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,529 psi | 74% | 2474 fps | 98.4% |
| Bofors RP3 | <<locked>> | 86% | 56,159 psi | 88% | 2457 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,764 psi | 81% | 2539 fps | 99.1% |
| Bofors RP7 | <<locked>> | 90% | 55,434 psi | 87% | 2454 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 42,540 psi | 67% | 2365 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 86% | 56,623 psi | 89% | 2477 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 57,000 psi | 89% | 2549 fps | 100% |
| Hodgdon H4350 | <<locked>> | 90% | 56,956 psi | 89% | 2510 fps | 99.6% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 57,000 psi | 89% | 2543 fps | 98.2% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,767 psi | 87% | 2526 fps | 98% |
| Hodgdon H4895 | <<locked>> | 82% | 57,653 psi | 90% | 2464 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,825 psi | 87% | 2474 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,157 psi | 85% | 2457 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 41,916 psi | 66% | 2457 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 92% | 57,101 psi | 89% | 2592 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,448 psi | 57% | 1467 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,114 psi | 86% | 2421 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,696 psi | 90% | 2448 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,840 psi | 89% | 2444 fps | 99.9% |
| IMR 4350 | <<locked>> | 94% | 56,289 psi | 88% | 2487 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,174 psi | 90% | 2477 fps | 99.9% |
| IMR 4831 | <<locked>> | 94% | 55,100 psi | 86% | 2490 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 57,116 psi | 90% | 2484 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,114 psi | 86% | 2480 fps | 98% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 50,575 psi | 79% | 2520 fps | 97.9% |
| Lovex D073.6 | <<locked>> | 82% | 57,450 psi | 90% | 2431 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,941 psi | 88% | 2388 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,725 psi | 90% | 2438 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,130 psi | 90% | 2470 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 54,839 psi | 86% | 2467 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,555 psi | 68% | 2339 fps | 99.4% |
| Norma 201 | <<locked>> | 82% | 55,724 psi | 87% | 2405 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,449 psi | 88% | 2398 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,926 psi | 86% | 2451 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,913 psi | 89% | 2536 fps | 99.4% |
| Norma MRPᴾ | <<locked>> | 100% | 54,839 psi | 86% | 2612 fps | 99.9% |
| Norma URP | <<locked>> | 94% | 57,043 psi | 89% | 2526 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,434 psi | 87% | 2477 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 50,691 psi | 79% | 2533 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 94% | 55,666 psi | 87% | 2536 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,049 psi | 71% | 2425 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,159 psi | 58% | 1503 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,405 psi | 88% | 2467 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,695 psi | 89% | 2523 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,391 psi | 88% | 2552 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,404 psi | 85% | 2523 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,594 psi | 89% | 2598 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,437 psi | 65% | 2451 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 84% | 56,347 psi | 88% | 2405 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,231 psi | 88% | 2454 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,377 psi | 90% | 2516 fps | 98.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 57,696 psi | 90% | 2569 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 90% | 55,434 psi | 87% | 2454 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,130 psi | 90% | 2470 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,450 psi | 90% | 2431 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,725 psi | 90% | 2438 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,839 psi | 86% | 2467 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,682 psi | 90% | 2510 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,376 psi | 87% | 2438 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,579 psi | 89% | 2333 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,406 psi | 90% | 2343 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,826 psi | 89% | 2431 fps | 99.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 2566 fps | 99.6% |
| Somchem S335 | <<locked>> | 82% | 56,202 psi | 88% | 2336 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,188 psi | 88% | 2451 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,535 psi | 87% | 2467 fps | 97.9% |
| Somchem S365 | <<locked>> | 96% | 56,072 psi | 88% | 2526 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,665 psi | 86% | 2500 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 82% | 57,130 psi | 90% | 2316 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,811 psi | 89% | 2362 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,898 psi | 89% | 2379 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,508 psi | 90% | 2425 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,724 psi | 87% | 2477 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,459 psi | 79% | 2431 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 84% | 54,969 psi | 86% | 2385 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,723 psi | 86% | 2487 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,839 psi | 86% | 2539 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,274 psi | 87% | 2608 fps | 98.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 43,787 psi | 69% | 2428 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,984 psi | 86% | 2448 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,145 psi | 90% | 2549 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,077 psi | 69% | 2536 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,492 psi | 87% | 2444 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,737 psi | 86% | 2497 fps | 99.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 50,966 psi | 80% | 2300 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,718 psi | 76% | 2323 fps | 99% |
| Accurate 3100 | <<locked>> | 82% | 28,703 psi | 45% | 2047 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 48,298 psi | 76% | 2310 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,651 psi | 57% | 2218 fps | 99.4% |
| Accurate MAGPRO | <<locked>> | 94% | 43,874 psi | 69% | 2434 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 53,621 psi | 84% | 2415 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,585 psi | 71% | 2293 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 35,650 psi | 56% | 2205 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 92% | 40,944 psi | 64% | 2336 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 98% | 32,024 psi | 50% | 2201 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,082 psi | 78% | 2487 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,006 psi | 72% | 2316 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,153 psi | 77% | 2375 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,897 psi | 56% | 2228 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,393 psi | 63% | 2329 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 35,375 psi | 55% | 2201 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 88% | 35,215 psi | 55% | 2247 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,324 psi | 41% | 2031 fps | 98.2% |
| Alliant Reloder-25 | <<locked>> | 86% | 27,862 psi | 44% | 2083 fps | 95.5% |
| Alliant Reloder-26 | 90.2 gr | 80% | 27,760 psi | 44% | 2129 fps | 96.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,243 psi | 83% | 2438 fps | 100% |
| Bofors RP15 | <<locked>> | 90% | 34,882 psi | 55% | 2238 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 46,238 psi | 72% | 2326 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 35,215 psi | 55% | 2247 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 40,930 psi | 64% | 2228 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 98% | 39,885 psi | 63% | 2316 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 46,586 psi | 73% | 2339 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 38,595 psi | 60% | 2260 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 80% | 41,582 psi | 65% | 2274 fps | 97.4% |
| Hodgdon H4831 | <<locked>> | 92% | 43,845 psi | 69% | 2346 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 42,931 psi | 67% | 2329 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 54,201 psi | 85% | 2421 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,489 psi | 52% | 2136 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,720 psi | 79% | 2411 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 34,722 psi | 54% | 2297 fps | 95.3% |
| Hodgdon Superformance | 93 gr | 80% | 37,333 psi | 59% | 2270 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,325 psi | 43% | 1306 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,793 psi | 81% | 2379 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,935 psi | 75% | 2320 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,154 psi | 79% | 2349 fps | 99.5% |
| IMR 4350 | <<locked>> | 80% | 36,477 psi | 57% | 2169 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,250 psi | 66% | 2251 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 35,360 psi | 55% | 2178 fps | 99.2% |
| IMR 4895 | <<locked>> | 80% | 50,401 psi | 79% | 2398 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 43,178 psi | 68% | 2297 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 94% | 41,698 psi | 65% | 2365 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 80% | 53,940 psi | 85% | 2392 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,591 psi | 82% | 2346 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,196 psi | 76% | 2316 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,827 psi | 62% | 2211 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 38,043 psi | 60% | 2198 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 28,079 psi | 44% | 2031 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 52,518 psi | 82% | 2362 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,026 psi | 83% | 2356 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,486 psi | 76% | 2362 fps | 100% |
| Norma 204 | <<locked>> | 80% | 35,795 psi | 56% | 2192 fps | 95.1% |
| Norma MRP | <<locked>> | 84% | 32,140 psi | 50% | 2205 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 36,564 psi | 57% | 2215 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 80% | 48,646 psi | 76% | 2385 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 38,522 psi | 60% | 2316 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 35,273 psi | 55% | 2205 fps | 97.8% |
| Ramshot Magnum | <<locked>> | 92% | 34,069 psi | 53% | 2215 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,789 psi | 44% | 1339 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,673 psi | 73% | 2329 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,982 psi | 83% | 2474 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,902 psi | 67% | 2372 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,245 psi | 57% | 2238 fps | 99.2% |
| ReloadSwiss RS 70 | 89.4 gr | 80% | 35,302 psi | 55% | 2247 fps | 98.8% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 33,852 psi | 53% | 2280 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 80% | 50,053 psi | 78% | 2323 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,642 psi | 68% | 2283 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 39,465 psi | 62% | 2234 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 84% | 34,316 psi | 54% | 2185 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 40,930 psi | 64% | 2228 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,827 psi | 62% | 2211 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,940 psi | 85% | 2392 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,196 psi | 76% | 2316 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,043 psi | 60% | 2198 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,570 psi | 70% | 2329 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,938 psi | 81% | 2392 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,272 psi | 83% | 2293 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,005 psi | 71% | 2188 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,914 psi | 61% | 2162 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 36,274 psi | 57% | 2231 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 53,026 psi | 83% | 2300 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,019 psi | 69% | 2280 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 42,728 psi | 67% | 2277 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 32,938 psi | 52% | 2178 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 32,721 psi | 51% | 2126 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 53,838 psi | 84% | 2280 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,227 psi | 79% | 2283 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,386 psi | 79% | 2303 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,945 psi | 66% | 2218 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,898 psi | 59% | 2208 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 88% | 34,287 psi | 54% | 2156 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 48,501 psi | 76% | 2303 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,304 psi | 58% | 2215 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 28,892 psi | 45% | 2093 fps | 98.2% |
| Vihtavuori N560 | <<locked>> | 92% | 42,482 psi | 67% | 2398 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 98% | 41,031 psi | 64% | 2379 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,927 psi | 58% | 2185 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 38,711 psi | 61% | 2264 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,119 psi | 36% | 2018 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,011 psi | 82% | 2402 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 36,477 psi | 57% | 2205 fps | 95.5% |
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 112 powders for .416 Weath. Mag. loaded with the .416 | 430gr | North Fork Semi Spitz. Alliant Reloder-26 delivers the highest muzzle velocity at 2,651 fps; across all powders the maximum-charge window runs from 1,467 fps to 2,651 fps. Accurate 3100 gives the best case fill at 100 %, and 112 of the 112 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 47–90 %, leaving at least 10 % headroom. The 430.0 gr projectile in 0.416" calls for a 1:19.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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 Reloder-26, ReloadSwiss RS 70, Hodgdon Superformance rank at the top here: for .416 Weath. Mag. with the .416 | 430gr | North Fork Semi Spitz they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 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.