Load Specifications
Bullet Manufacturer:Lehigh Defense
Bullet Weight:357 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:1:20.0
Load data in caliber .416 Weath. Mag. with .416 | 357gr | Lehigh Defense Xtreme Defense 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, Hodgdon Superformance and Alliant Reloder-17.
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% | 55,622 psi | 87% | 2582 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,723 psi | 86% | 2615 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,014 psi | 88% | 2677 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,768 psi | 89% | 2680 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,976 psi | 70% | 2602 fps | 98.3% |
| Accurate 4064 | <<locked>> | 88% | 54,795 psi | 86% | 2664 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,563 psi | 86% | 2762 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 54,592 psi | 86% | 2694 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,608 psi | 87% | 2697 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 2746 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,884 psi | 89% | 2687 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,824 psi | 86% | 2608 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,273 psi | 85% | 2818 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,985 psi | 88% | 2720 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,420 psi | 88% | 2743 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,535 psi | 87% | 2815 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 56,753 psi | 89% | 2844 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,532 psi | 81% | 2736 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 45,194 psi | 71% | 2677 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,583 psi | 67% | 2628 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,492 psi | 59% | 2539 fps | 97.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,732 psi | 75% | 2799 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,302 psi | 85% | 2713 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 56,579 psi | 89% | 2736 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 45,194 psi | 71% | 2677 fps | 96% |
| Bofors RP7 | <<locked>> | 94% | 56,260 psi | 88% | 2717 fps | 98.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,100 psi | 86% | 2621 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,550 psi | 89% | 2723 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 57,377 psi | 90% | 2753 fps | 100% |
| Hodgdon H414 | <<locked>> | 96% | 57,130 psi | 90% | 2815 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 94% | 57,551 psi | 90% | 2776 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 84% | 55,143 psi | 86% | 2700 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,463 psi | 87% | 2740 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,853 psi | 86% | 2740 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 57,682 psi | 90% | 2861 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,940 psi | 56% | 1621 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,275 psi | 88% | 2703 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,651 psi | 87% | 2677 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,201 psi | 87% | 2680 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,781 psi | 86% | 2664 fps | 99% |
| IMR 4350 | <<locked>> | 98% | 56,710 psi | 89% | 2746 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,853 psi | 86% | 2697 fps | 98.9% |
| IMR 4831 | <<locked>> | 98% | 55,013 psi | 86% | 2756 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 54,346 psi | 85% | 2720 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,884 psi | 89% | 2687 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,563 psi | 86% | 2667 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,334 psi | 90% | 2667 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,172 psi | 86% | 2674 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 57,653 psi | 90% | 2736 fps | 99.8% |
| Lovex S070 | <<locked>> | 96% | 55,347 psi | 87% | 2730 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 37,463 psi | 59% | 2464 fps | 96.6% |
| Norma 201 | <<locked>> | 86% | 56,840 psi | 89% | 2684 fps | 100% |
| Norma 202 | <<locked>> | 86% | 57,479 psi | 90% | 2684 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,651 psi | 87% | 2726 fps | 100% |
| Norma 204 | <<locked>> | 98% | 57,479 psi | 90% | 2799 fps | 98% |
| Norma MRPᴾ | <<locked>> | 100% | 47,572 psi | 75% | 2756 fps | 98% |
| Norma URP | <<locked>> | 98% | 57,000 psi | 89% | 2799 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 56,275 psi | 88% | 2759 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,724 psi | 87% | 2802 fps | 99.6% |
| Ramshot TAC | <<locked>> | 84% | 57,072 psi | 89% | 2720 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,942 psi | 89% | 2733 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 57,696 psi | 90% | 2694 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,492 psi | 57% | 1660 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 57,479 psi | 90% | 2740 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 57,261 psi | 90% | 2808 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,652 psi | 89% | 2841 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,085 psi | 85% | 2789 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 57,130 psi | 90% | 2871 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 54,563 psi | 86% | 2615 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 57,435 psi | 90% | 2684 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,608 psi | 89% | 2730 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 54,273 psi | 85% | 2717 fps | 96.5% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,256 psi | 79% | 2717 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 94% | 56,260 psi | 88% | 2717 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 57,653 psi | 90% | 2736 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,563 psi | 86% | 2667 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,172 psi | 86% | 2674 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,347 psi | 87% | 2730 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,621 psi | 86% | 2743 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,782 psi | 87% | 2700 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,507 psi | 89% | 2717 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,824 psi | 86% | 2575 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,013 psi | 86% | 2575 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,447 psi | 85% | 2648 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,777 psi | 78% | 2713 fps | 97.1% |
| Somchem S335 | <<locked>> | 86% | 57,566 psi | 90% | 2618 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,347 psi | 87% | 2687 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 56,724 psi | 89% | 2726 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 56,159 psi | 88% | 2717 fps | 95.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,347 psi | 87% | 2799 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,140 psi | 80% | 2700 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 84% | 55,187 psi | 86% | 2556 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 57,479 psi | 90% | 2641 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,520 psi | 85% | 2618 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,592 psi | 86% | 2657 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,883 psi | 88% | 2743 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 44,106 psi | 69% | 2569 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 84% | 57,464 psi | 90% | 2687 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,072 psi | 88% | 2664 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,911 psi | 86% | 2753 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,239 psi | 74% | 2700 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,753 psi | 87% | 2720 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,056 psi | 85% | 2687 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 57,421 psi | 90% | 2818 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,130 psi | 60% | 2661 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,478 psi | 89% | 2726 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 47,892 psi | 75% | 2638 fps | 96.3% |
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% | 52,315 psi | 82% | 2539 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,194 psi | 71% | 2484 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,388 psi | 82% | 2628 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,845 psi | 69% | 2474 fps | 96.3% |
| Accurate 3100 | <<locked>> | 92% | 34,389 psi | 54% | 2395 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 42,743 psi | 67% | 2487 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,720 psi | 50% | 2343 fps | 96.5% |
| ADI AR 2206H | <<locked>> | 80% | 48,312 psi | 76% | 2595 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,046 psi | 64% | 2457 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 43,453 psi | 68% | 2585 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,357 psi | 79% | 2595 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,401 psi | 81% | 2566 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,266 psi | 69% | 2648 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,075 psi | 64% | 2480 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,961 psi | 69% | 2543 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,850 psi | 50% | 2352 fps | 96.7% |
| Alliant Reloder-17 | 91.4 gr | 80% | 35,433 psi | 56% | 2470 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 42,656 psi | 67% | 2575 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 42,424 psi | 66% | 2621 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,092 psi | 41% | 2221 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 96% | 33,141 psi | 52% | 2428 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 88% | 31,546 psi | 49% | 2438 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,572 psi | 75% | 2608 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 40,843 psi | 64% | 2490 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 42,424 psi | 66% | 2621 fps | 95.2% |
| Bofors RP7 | <<locked>> | 82% | 38,957 psi | 61% | 2415 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,967 psi | 81% | 2579 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,603 psi | 78% | 2625 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,524 psi | 65% | 2497 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 82% | 36,172 psi | 57% | 2441 fps | 95% |
| Hodgdon H4350 | <<locked>> | 84% | 42,032 psi | 66% | 2513 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 48,805 psi | 76% | 2605 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,312 psi | 46% | 2257 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,005 psi | 71% | 2589 fps | 100% |
| Hodgdon Superformance | 103.9 gr | 86% | 40,524 psi | 64% | 2562 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,861 psi | 42% | 1447 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,688 psi | 73% | 2559 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 48,849 psi | 77% | 2585 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,149 psi | 68% | 2487 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,469 psi | 71% | 2510 fps | 97.5% |
| IMR 4350 | <<locked>> | 86% | 39,160 psi | 61% | 2444 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 37,985 psi | 60% | 2392 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 30,763 psi | 48% | 2300 fps | 96.2% |
| IMR 4895 | <<locked>> | 80% | 45,049 psi | 71% | 2572 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 80% | 50,357 psi | 79% | 2595 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,819 psi | 75% | 2572 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,906 psi | 75% | 2530 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 43,221 psi | 68% | 2490 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,563 psi | 56% | 2349 fps | 96.3% |
| Lovex S070 | <<locked>> | 82% | 35,969 psi | 56% | 2375 fps | 95.1% |
| Lovex S071 | <<locked>> | 96% | 32,938 psi | 52% | 2362 fps | 95% |
| Norma 201 | <<locked>> | 80% | 47,326 psi | 74% | 2546 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,776 psi | 75% | 2546 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,308 psi | 68% | 2533 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 44,077 psi | 69% | 2582 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 38,943 psi | 61% | 2582 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 31,952 psi | 50% | 2339 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 80% | 43,033 psi | 67% | 2549 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 35,389 psi | 55% | 2431 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 50,183 psi | 79% | 2618 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,908 psi | 78% | 2631 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 54,143 psi | 85% | 2648 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,209 psi | 43% | 1480 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,785 psi | 65% | 2480 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,717 psi | 73% | 2648 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,710 psi | 59% | 2526 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,314 psi | 49% | 2356 fps | 95.9% |
| ReloadSwiss RS 70 | 95.2 gr | 82% | 33,344 psi | 52% | 2415 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 51,372 psi | 81% | 2569 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,121 psi | 71% | 2500 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,464 psi | 60% | 2438 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 47,877 psi | 75% | 2615 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 94% | 41,481 psi | 65% | 2559 fps | 95% |
| Rottweil R 907 | <<locked>> | 82% | 38,957 psi | 61% | 2415 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,563 psi | 56% | 2349 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,819 psi | 75% | 2572 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,221 psi | 68% | 2490 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 35,969 psi | 56% | 2375 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,349 psi | 62% | 2487 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,675 psi | 76% | 2595 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,673 psi | 73% | 2569 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,414 psi | 76% | 2484 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,553 psi | 64% | 2365 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 37,101 psi | 58% | 2346 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 43,729 psi | 69% | 2605 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 48,153 psi | 75% | 2490 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,428 psi | 76% | 2585 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,189 psi | 61% | 2441 fps | 99.6% |
| Somchem S361 | <<locked>> | 98% | 52,620 psi | 82% | 2664 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 28,674 psi | 45% | 2300 fps | 98.5% |
| Somchem S385 | <<locked>> | 92% | 39,392 psi | 62% | 2490 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 48,863 psi | 77% | 2474 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,817 psi | 70% | 2470 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,223 psi | 71% | 2484 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,246 psi | 58% | 2375 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 33,330 psi | 52% | 2343 fps | 96.8% |
| Vihtavuori N165 | <<locked>> | 98% | 41,278 psi | 65% | 2516 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 50,517 psi | 79% | 2592 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,555 psi | 68% | 2480 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,837 psi | 51% | 2346 fps | 96.4% |
| Vihtavuori N555 | <<locked>> | 84% | 28,065 psi | 44% | 2293 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,808 psi | 51% | 2320 fps | 98.6% |
| Winchester 748 | <<locked>> | 80% | 50,720 psi | 79% | 2641 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 36,274 psi | 57% | 2441 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,034 psi | 41% | 2297 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,296 psi | 73% | 2575 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 44,672 psi | 70% | 2582 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 120 powders for .416 Weath. Mag. loaded with the .416 | 357gr | Lehigh Defense Xtreme Defense. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,871 fps; across all powders the maximum-charge window runs from 1,621 fps to 2,871 fps. Accurate 3100 gives the best case fill at 100 %, and 120 of the 120 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 357.0 gr projectile in 0.416" calls for a 1:20.0 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .416 Weath. Mag. with the .416 | 357gr | Lehigh Defense Xtreme Defense they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.