Load Specifications
Load data in caliber .416 Rigby with .416 | 300gr | Reichenberg Solid bullet and 42 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, Somchem S365 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.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 42,554 psi | 90% | 2595 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 40,176 psi | 85% | 2585 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 41,626 psi | 88% | 2674 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 86% | 42,656 psi | 90% | 2608 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 40,234 psi | 85% | 2677 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 42,003 psi | 89% | 2631 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 84% | 42,380 psi | 90% | 2641 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 94% | 41,727 psi | 89% | 2690 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 90% | 41,756 psi | 89% | 2720 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,505 psi | 75% | 2575 fps | 96.6% |
| Bofors RP3 | <<locked>> | 86% | 41,582 psi | 88% | 2635 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 40,770 psi | 86% | 2628 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 40,611 psi | 86% | 2641 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,925 psi | 74% | 1713 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 42,337 psi | 90% | 2608 fps | 98.6% |
| IMR 3031 | <<locked>> | 82% | 40,234 psi | 85% | 2598 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 41,539 psi | 88% | 2582 fps | 97.6% |
| IMR 4831 | <<locked>> | 98% | 40,799 psi | 87% | 2641 fps | 96.7% |
| IMR 4895 | <<locked>> | 82% | 40,741 psi | 86% | 2618 fps | 97.9% |
| Lovex S062 | <<locked>> | 84% | 41,684 psi | 88% | 2592 fps | 99% |
| Norma 203B | <<locked>> | 84% | 41,698 psi | 88% | 2628 fps | 98.1% |
| Norma URP | <<locked>> | 94% | 41,887 psi | 89% | 2674 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 84% | 41,495 psi | 88% | 2644 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,273 psi | 75% | 1755 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 41,684 psi | 88% | 2687 fps | 97.5% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 41,626 psi | 88% | 2730 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 41,539 psi | 88% | 2694 fps | 96.5% |
| Rottweil R 902 | <<locked>> | 82% | 40,973 psi | 87% | 2559 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 88% | 41,568 psi | 88% | 2625 fps | 98.6% |
| Shooters World Precision | <<locked>> | 84% | 41,684 psi | 88% | 2592 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 40,350 psi | 86% | 2628 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 42,061 psi | 89% | 2526 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 42,540 psi | 90% | 2631 fps | 98.6% |
| Somchem S365 | <<locked>> | 98% | 42,627 psi | 90% | 2733 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 82% | 40,364 psi | 86% | 2549 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 41,162 psi | 87% | 2556 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 40,683 psi | 86% | 2569 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 92% | 41,278 psi | 88% | 2628 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 84% | 42,279 psi | 90% | 2595 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 40,408 psi | 86% | 2625 fps | 96.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,116 psi | 81% | 2651 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 41,713 psi | 88% | 2612 fps | 98.6% |
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 2495 | <<locked>> | 80% | 37,101 psi | 79% | 2493 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,114 psi | 74% | 2480 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 36,114 psi | 77% | 2559 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 35,273 psi | 75% | 2454 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,521 psi | 80% | 2615 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,490 psi | 73% | 2467 fps | 97% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,188 psi | 79% | 2530 fps | 96.3% |
| Alliant Reloder-16 | 94.8 gr | 90% | 36,840 psi | 78% | 2579 fps | 95.3% |
| Alliant Reloder-17 | 93 gr | 82% | 31,807 psi | 67% | 2477 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 33,344 psi | 71% | 2520 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 33,852 psi | 72% | 2467 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 31,531 psi | 67% | 2418 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,476 psi | 75% | 2530 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,991 psi | 55% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,246 psi | 79% | 2503 fps | 97.4% |
| IMR 3031 | <<locked>> | 80% | 37,695 psi | 80% | 2549 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,447 psi | 73% | 2428 fps | 95.4% |
| IMR 4831 | <<locked>> | 94% | 35,766 psi | 76% | 2533 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 38,072 psi | 81% | 2562 fps | 97.2% |
| Lovex S062 | <<locked>> | 80% | 36,680 psi | 78% | 2490 fps | 98% |
| Norma 203B | <<locked>> | 80% | 36,550 psi | 78% | 2520 fps | 96.7% |
| Norma URP | <<locked>> | 90% | 36,782 psi | 78% | 2566 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 36,114 psi | 77% | 2530 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,165 psi | 56% | 1568 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,725 psi | 82% | 2628 fps | 96.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 31,647 psi | 67% | 2487 fps | 97.7% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 38,696 psi | 82% | 2635 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 38,421 psi | 82% | 2507 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 31,792 psi | 67% | 2411 fps | 95.8% |
| Shooters World Precision | <<locked>> | 80% | 36,680 psi | 78% | 2490 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,967 psi | 70% | 2457 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,751 psi | 74% | 2388 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 32,779 psi | 70% | 2418 fps | 95.9% |
| Somchem S365 | 92.5 gr | 86% | 28,645 psi | 61% | 2395 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 37,739 psi | 80% | 2500 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,624 psi | 82% | 2507 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 31,183 psi | 66% | 2362 fps | 96.9% |
| Vihtavuori N160 | <<locked>> | 90% | 38,537 psi | 82% | 2572 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 37,101 psi | 79% | 2493 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 90% | 37,797 psi | 80% | 2569 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 98% | 35,665 psi | 76% | 2595 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,763 psi | 67% | 2385 fps | 95.4% |
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 69 powders for .416 Rigby loaded with the .416 | 300gr | Reichenberg Solid. Somchem S365 delivers the highest muzzle velocity at 2,733 fps; across all powders the maximum-charge window runs from 1,713 fps to 2,733 fps. Accurate 3100 gives the best case fill at 100 %, and 69 of the 69 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 67–90 %, leaving at least 10 % headroom. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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-16, Somchem S365, Alliant Reloder-17 rank at the top here: for .416 Rigby with the .416 | 300gr | Reichenberg Solid they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 3100, Bofors RP7 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.