Load Specifications
Load data in caliber .416 Rigby with .416 | 300gr | TWENTY-NINE HP bullet and 46 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Somchem S365.
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% | 41,713 psi | 88% | 2556 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 41,887 psi | 89% | 2592 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 40,103 psi | 85% | 2621 fps | 96% |
| ADI AR 2208 | <<locked>> | 86% | 41,423 psi | 88% | 2559 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 41,756 psi | 89% | 2684 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 40,828 psi | 87% | 2582 fps | 98.3% |
| Alliant Reloder-15 | <<locked>> | 84% | 41,292 psi | 88% | 2592 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 94% | 40,495 psi | 86% | 2631 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 90% | 40,350 psi | 86% | 2661 fps | 97.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 42,105 psi | 89% | 2608 fps | 96.7% |
| Bofors RP3 | <<locked>> | 86% | 40,451 psi | 86% | 2585 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 86% | 41,553 psi | 88% | 2589 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 42,047 psi | 89% | 2628 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 41,858 psi | 89% | 2641 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,911 psi | 74% | 1690 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 41,829 psi | 89% | 2575 fps | 98.2% |
| IMR 4064 | <<locked>> | 84% | 40,988 psi | 87% | 2543 fps | 97.1% |
| IMR 4831 | <<locked>> | 96% | 41,307 psi | 88% | 2628 fps | 96.5% |
| IMR 4895 | <<locked>> | 84% | 42,279 psi | 90% | 2625 fps | 97.9% |
| Lovex D073.6 | <<locked>> | 82% | 41,843 psi | 89% | 2592 fps | 99.7% |
| Lovex S062 | <<locked>> | 84% | 40,625 psi | 86% | 2546 fps | 98.6% |
| Norma 201 | <<locked>> | 82% | 42,221 psi | 90% | 2566 fps | 98.9% |
| Norma 202 | <<locked>> | 82% | 42,438 psi | 90% | 2579 fps | 99.9% |
| Norma 203B | <<locked>> | 84% | 40,611 psi | 86% | 2582 fps | 97.5% |
| Norma URP | <<locked>> | 94% | 40,553 psi | 86% | 2625 fps | 96% |
| Ramshot Big Game | <<locked>> | 84% | 40,147 psi | 85% | 2592 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,331 psi | 75% | 1729 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 40,277 psi | 85% | 2638 fps | 96.8% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 40,350 psi | 86% | 2674 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 82% | 40,132 psi | 85% | 2516 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 88% | 40,451 psi | 86% | 2579 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 82% | 41,843 psi | 89% | 2592 fps | 99.7% |
| Shooters World Precision | <<locked>> | 84% | 40,625 psi | 86% | 2546 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 41,742 psi | 89% | 2631 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,611 psi | 88% | 2575 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 40,973 psi | 87% | 2484 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 41,336 psi | 88% | 2585 fps | 98.1% |
| Somchem S365 | <<locked>> | 98% | 41,104 psi | 87% | 2680 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 84% | 41,858 psi | 89% | 2552 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 40,089 psi | 85% | 2513 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 90% | 42,163 psi | 89% | 2572 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 94% | 42,525 psi | 90% | 2625 fps | 96.4% |
| Vihtavuori N540 | <<locked>> | 84% | 41,263 psi | 88% | 2549 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 94% | 41,742 psi | 89% | 2628 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 40,437 psi | 86% | 2556 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 40,857 psi | 87% | 2579 fps | 98.1% |
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% | 36,579 psi | 78% | 2461 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,592 psi | 73% | 2444 fps | 99.3% |
| Accurate 4350 | <<locked>> | 92% | 37,478 psi | 80% | 2566 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 82% | 36,724 psi | 78% | 2457 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 39,015 psi | 83% | 2621 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,649 psi | 71% | 2425 fps | 96.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,332 psi | 77% | 2484 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 92% | 38,116 psi | 81% | 2579 fps | 95.3% |
| Alliant Reloder-17 | 90.3 gr | 84% | 33,185 psi | 70% | 2487 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,378 psi | 84% | 2549 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 33,098 psi | 70% | 2425 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 84% | 39,015 psi | 83% | 2536 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,721 psi | 69% | 2421 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,593 psi | 78% | 2530 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,962 psi | 55% | 1506 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,204 psi | 83% | 2520 fps | 97.5% |
| IMR 4064 | <<locked>> | 80% | 36,129 psi | 77% | 2441 fps | 95.6% |
| IMR 4831 | <<locked>> | 94% | 38,711 psi | 82% | 2572 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 37,173 psi | 79% | 2516 fps | 96.6% |
| Lovex D073.6 | <<locked>> | 80% | 39,073 psi | 83% | 2539 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 35,955 psi | 76% | 2448 fps | 97.5% |
| Norma 201 | <<locked>> | 80% | 39,653 psi | 84% | 2513 fps | 98.4% |
| Norma 202 | <<locked>> | 80% | 39,726 psi | 84% | 2526 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 35,708 psi | 76% | 2477 fps | 96% |
| Norma URP | <<locked>> | 92% | 38,029 psi | 81% | 2569 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 35,056 psi | 74% | 2480 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,295 psi | 56% | 1545 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,623 psi | 80% | 2579 fps | 96% |
| ReloadSwiss RS 60 | 86 gr | 80% | 30,995 psi | 66% | 2438 fps | 96.9% |
| Rottweil R 902 | <<locked>> | 80% | 37,695 psi | 80% | 2467 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 80% | 31,125 psi | 66% | 2369 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,073 psi | 83% | 2539 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 35,955 psi | 76% | 2448 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,374 psi | 73% | 2467 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,015 psi | 83% | 2523 fps | 97% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,982 psi | 72% | 2346 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 32,155 psi | 68% | 2379 fps | 95.3% |
| Somchem S365 | 89.7 gr | 88% | 29,878 psi | 63% | 2408 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 36,782 psi | 78% | 2461 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,623 psi | 80% | 2464 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 30,487 psi | 65% | 2320 fps | 96.2% |
| Vihtavuori N160 | <<locked>> | 92% | 39,914 psi | 85% | 2572 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 36,216 psi | 77% | 2451 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 92% | 39,088 psi | 83% | 2572 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,156 psi | 70% | 2395 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,174 psi | 81% | 2523 fps | 97.4% |
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 46 powders for .416 Rigby loaded with the .416 | 300gr | TWENTY-NINE HP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,684 fps; across all powders the maximum-charge window runs from 1,690 fps to 2,684 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 46 of the 46 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 74–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.416" calls for a 1:22.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14 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 60, Alliant Reloder-17, Somchem S365 rank at the top here: for .416 Rigby with the .416 | 300gr | TWENTY-NINE HP 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.