Load Specifications
Bullet Manufacturer:North Fork
Bullet Weight:370 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:1:20.5
Load data in caliber .416 Weath. Mag. with .416 | 370gr | NorthFork Bonded Core bullet and 107 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and ReloadSwiss RS 60.
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 2015 | <<locked>> | 82% | 57,101 psi | 89% | 2552 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,434 psi | 88% | 2585 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,752 psi | 86% | 2608 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,717 psi | 73% | 2589 fps | 98.9% |
| Accurate 4064 | <<locked>> | 88% | 56,681 psi | 89% | 2638 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,652 psi | 89% | 2743 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 56,217 psi | 88% | 2667 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 57,261 psi | 90% | 2671 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,317 psi | 85% | 2730 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,042 psi | 86% | 2615 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,666 psi | 89% | 2579 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,130 psi | 88% | 2795 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,580 psi | 90% | 2690 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,679 psi | 86% | 2667 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,435 psi | 90% | 2792 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,984 psi | 86% | 2769 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,185 psi | 83% | 2717 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,760 psi | 73% | 2664 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,208 psi | 69% | 2612 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,856 psi | 61% | 2533 fps | 98.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,748 psi | 78% | 2785 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,028 psi | 88% | 2690 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 43,105 psi | 68% | 2592 fps | 95.8% |
| Bofors RP3 | <<locked>> | 88% | 54,868 psi | 86% | 2661 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,760 psi | 73% | 2664 fps | 97% |
| Bofors RP7 | <<locked>> | 92% | 54,607 psi | 86% | 2648 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,434 psi | 88% | 2592 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,549 psi | 85% | 2644 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,419 psi | 87% | 2677 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 55,492 psi | 87% | 2743 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 92% | 55,782 psi | 87% | 2703 fps | 98.6% |
| Hodgdon H4895 | <<locked>> | 84% | 56,840 psi | 89% | 2674 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,551 psi | 90% | 2713 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,666 psi | 89% | 2713 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,622 psi | 87% | 2785 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,129 psi | 57% | 1594 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,462 psi | 85% | 2628 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 57,363 psi | 90% | 2648 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,681 psi | 89% | 2654 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 56,260 psi | 88% | 2641 fps | 99.4% |
| IMR 4350 | <<locked>> | 96% | 54,969 psi | 86% | 2677 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,275 psi | 88% | 2671 fps | 99.3% |
| IMR 4831 | <<locked>> | 98% | 57,029 psi | 89% | 2733 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 56,043 psi | 88% | 2694 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 54,012 psi | 85% | 2664 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 82% | 55,042 psi | 86% | 2615 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,362 psi | 88% | 2641 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,361 psi | 87% | 2595 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,681 psi | 89% | 2644 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,043 psi | 88% | 2667 fps | 99.9% |
| Lovex S070 | <<locked>> | 96% | 56,985 psi | 89% | 2707 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,986 psi | 61% | 2451 fps | 97.5% |
| Norma 201 | <<locked>> | 84% | 54,984 psi | 86% | 2612 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,622 psi | 87% | 2608 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,377 psi | 90% | 2703 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,550 psi | 87% | 2726 fps | 98.1% |
| Norma MRPᴾ | <<locked>> | 100% | 49,356 psi | 77% | 2743 fps | 98.7% |
| Norma URP | <<locked>> | 96% | 55,288 psi | 87% | 2726 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 54,317 psi | 85% | 2684 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,725 psi | 90% | 2782 fps | 99.9% |
| Ramshot TAC | <<locked>> | 82% | 54,998 psi | 86% | 2644 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,868 psi | 86% | 2657 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,724 psi | 58% | 1634 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,535 psi | 87% | 2664 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,376 psi | 87% | 2733 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,694 psi | 86% | 2762 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,231 psi | 88% | 2766 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,100 psi | 86% | 2795 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 55,956 psi | 88% | 2585 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,550 psi | 87% | 2612 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,839 psi | 86% | 2657 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 56,086 psi | 88% | 2700 fps | 97.3% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,199 psi | 82% | 2703 fps | 98% |
| Rottweil R 907 | <<locked>> | 92% | 54,607 psi | 86% | 2648 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,043 psi | 88% | 2667 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,362 psi | 88% | 2641 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,681 psi | 89% | 2644 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,985 psi | 89% | 2707 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,304 psi | 88% | 2717 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,479 psi | 90% | 2677 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,578 psi | 86% | 2644 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,144 psi | 88% | 2543 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,608 psi | 89% | 2546 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,927 psi | 88% | 2625 fps | 99.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,706 psi | 81% | 2697 fps | 97.9% |
| Somchem S335 | <<locked>> | 84% | 55,651 psi | 87% | 2543 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,072 psi | 89% | 2664 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,940 psi | 86% | 2651 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 54,230 psi | 85% | 2648 fps | 96.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,667 psi | 90% | 2776 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,881 psi | 83% | 2680 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 84% | 56,536 psi | 89% | 2526 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,753 psi | 87% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,014 psi | 88% | 2589 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 56,217 psi | 88% | 2628 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,230 psi | 85% | 2674 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,571 psi | 71% | 2552 fps | 97% |
| Vihtavuori N530 | <<locked>> | 82% | 55,506 psi | 87% | 2615 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,551 psi | 90% | 2631 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,768 psi | 89% | 2730 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,197 psi | 77% | 2684 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,638 psi | 90% | 2697 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,796 psi | 87% | 2661 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,622 psi | 87% | 2746 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,581 psi | 62% | 2654 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,563 psi | 86% | 2651 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,530 psi | 78% | 2621 fps | 97.2% |
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 2015 | <<locked>> | 80% | 53,722 psi | 84% | 2510 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,601 psi | 73% | 2454 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,005 psi | 71% | 2454 fps | 97% |
| Accurate 3100 | <<locked>> | 90% | 33,431 psi | 52% | 2333 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 44,135 psi | 69% | 2461 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,967 psi | 52% | 2329 fps | 97.4% |
| ADI AR 2206H | <<locked>> | 80% | 49,632 psi | 78% | 2569 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,293 psi | 66% | 2438 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 42,090 psi | 66% | 2516 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,706 psi | 81% | 2569 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,142 psi | 83% | 2536 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,658 psi | 72% | 2628 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,308 psi | 66% | 2461 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,223 psi | 71% | 2520 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,822 psi | 51% | 2339 fps | 97.5% |
| Alliant Reloder-17 | 91.6 gr | 80% | 36,724 psi | 58% | 2457 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 41,437 psi | 65% | 2510 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 41,176 psi | 65% | 2556 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 82% | 25,454 psi | 40% | 2165 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 32,285 psi | 51% | 2369 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 86% | 30,618 psi | 48% | 2375 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,095 psi | 77% | 2589 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 40,451 psi | 63% | 2539 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 42,308 psi | 66% | 2467 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 41,176 psi | 65% | 2556 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 37,710 psi | 59% | 2346 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,214 psi | 83% | 2549 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,039 psi | 80% | 2598 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,801 psi | 67% | 2474 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 35,041 psi | 55% | 2372 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 82% | 40,727 psi | 64% | 2444 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 50,125 psi | 79% | 2579 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,385 psi | 48% | 2247 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,412 psi | 73% | 2566 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 36,448 psi | 57% | 2431 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,934 psi | 42% | 1421 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,993 psi | 75% | 2533 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,531 psi | 79% | 2559 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,469 psi | 70% | 2467 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,746 psi | 73% | 2493 fps | 98.1% |
| IMR 4350 | <<locked>> | 84% | 38,000 psi | 60% | 2379 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,131 psi | 61% | 2379 fps | 96.3% |
| IMR 4831 | <<locked>> | 80% | 31,995 psi | 50% | 2290 fps | 97.1% |
| IMR 4895 | <<locked>> | 80% | 46,354 psi | 73% | 2546 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 50,734 psi | 80% | 2612 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 51,706 psi | 81% | 2569 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,429 psi | 77% | 2546 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,052 psi | 77% | 2503 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,469 psi | 70% | 2464 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,637 psi | 57% | 2333 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 34,911 psi | 55% | 2313 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 32,242 psi | 51% | 2306 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 48,631 psi | 76% | 2520 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,139 psi | 77% | 2520 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,599 psi | 70% | 2510 fps | 100% |
| Norma 204 | <<locked>> | 88% | 42,641 psi | 67% | 2513 fps | 95.4% |
| Norma MRP | <<locked>> | 92% | 37,855 psi | 59% | 2516 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 33,141 psi | 52% | 2329 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 80% | 44,425 psi | 70% | 2530 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 80% | 32,213 psi | 50% | 2313 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 51,605 psi | 81% | 2595 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,430 psi | 81% | 2605 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,412 psi | 43% | 1457 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,975 psi | 67% | 2461 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,414 psi | 76% | 2628 fps | 100% |
| ReloadSwiss RS 60 | 91.6 gr | 80% | 39,044 psi | 61% | 2510 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,576 psi | 51% | 2346 fps | 96.9% |
| ReloadSwiss RS 70 | 93 gr | 80% | 32,213 psi | 50% | 2346 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 52,852 psi | 83% | 2543 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,383 psi | 73% | 2477 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,856 psi | 62% | 2418 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 46,514 psi | 73% | 2549 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 92% | 40,306 psi | 63% | 2493 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 37,710 psi | 59% | 2346 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,637 psi | 57% | 2333 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,429 psi | 77% | 2546 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,469 psi | 70% | 2464 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 34,911 psi | 55% | 2313 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,770 psi | 64% | 2467 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,227 psi | 79% | 2572 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,095 psi | 75% | 2546 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,792 psi | 78% | 2457 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,785 psi | 65% | 2339 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 35,824 psi | 56% | 2280 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 39,929 psi | 63% | 2487 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 49,356 psi | 77% | 2461 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,980 psi | 78% | 2562 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,379 psi | 63% | 2418 fps | 99.8% |
| Somchem S361 | <<locked>> | 96% | 50,807 psi | 80% | 2595 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 29,689 psi | 47% | 2287 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 38,348 psi | 60% | 2428 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 50,241 psi | 79% | 2444 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,340 psi | 73% | 2444 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,615 psi | 73% | 2461 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,508 psi | 60% | 2356 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 34,476 psi | 54% | 2326 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 96% | 40,147 psi | 63% | 2454 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 52,011 psi | 82% | 2566 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,817 psi | 70% | 2454 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,924 psi | 53% | 2329 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 80% | 25,715 psi | 40% | 2185 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,881 psi | 53% | 2303 fps | 99.2% |
| Winchester 748 | <<locked>> | 80% | 52,214 psi | 82% | 2612 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 35,143 psi | 55% | 2375 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 84% | 23,830 psi | 37% | 2182 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,848 psi | 75% | 2552 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 43,308 psi | 68% | 2516 fps | 95.7% |
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 121 powders for .416 Weath. Mag. loaded with the .416 | 370gr | NorthFork Bonded Core. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,795 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,795 fps. Accurate 3100 gives the best case fill at 100 %, and 121 of the 121 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 370.0 gr projectile in 0.416" calls for a 1:20.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2209 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. ReloadSwiss RS 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .416 Weath. Mag. with the .416 | 370gr | NorthFork Bonded Core they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Baschieri & Pellagri 109, Bofors RP30 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.