Load Specifications
Load data in caliber .416 Rigby with .416 | 400gr | Barnes Solid RN 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-26, Somchem S365 and Vihtavuori N555.
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 3100 | <<locked>> | 98% | 40,973 psi | 87% | 2270 fps | 97.5% |
| Accurate 4350 | <<locked>> | 88% | 40,640 psi | 86% | 2274 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 90% | 42,627 psi | 90% | 2329 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 86% | 42,482 psi | 90% | 2349 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,611 psi | 88% | 2339 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 36,724 psi | 78% | 2260 fps | 96.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 40,509 psi | 86% | 2385 fps | 98.8% |
| Bofors RP7 | <<locked>> | 84% | 40,785 psi | 87% | 2198 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 86% | 40,335 psi | 86% | 2267 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 42,105 psi | 89% | 2274 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 42,569 psi | 90% | 2333 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,853 psi | 76% | 1447 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 40,872 psi | 87% | 2221 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,293 psi | 90% | 2224 fps | 96.6% |
| IMR 4831 | <<locked>> | 90% | 41,568 psi | 88% | 2274 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 41,974 psi | 89% | 2224 fps | 98% |
| Lovex S070 | <<locked>> | 88% | 42,511 psi | 90% | 2254 fps | 97.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 36,477 psi | 77% | 2192 fps | 96.3% |
| Norma MRP | <<locked>> | 96% | 40,727 psi | 86% | 2349 fps | 96.3% |
| Norma URP | <<locked>> | 88% | 40,596 psi | 86% | 2270 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 90% | 42,018 psi | 89% | 2306 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,376 psi | 77% | 1480 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 42,322 psi | 90% | 2349 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 40,190 psi | 85% | 2293 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 42,569 psi | 90% | 2352 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 82% | 40,277 psi | 85% | 2218 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 40,785 psi | 87% | 2198 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 41,974 psi | 89% | 2224 fps | 98% |
| Shooters World SW4350 | <<locked>> | 88% | 42,511 psi | 90% | 2254 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 41,249 psi | 88% | 2260 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 42,540 psi | 90% | 2149 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,394 psi | 88% | 2178 fps | 96.6% |
| Somchem S355 | <<locked>> | 82% | 40,872 psi | 87% | 2218 fps | 99.7% |
| Somchem S365 | <<locked>> | 92% | 41,495 psi | 88% | 2323 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 41,104 psi | 87% | 2264 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 84% | 41,611 psi | 88% | 2205 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 42,366 psi | 90% | 2267 fps | 99% |
| Vihtavuori N550 | <<locked>> | 88% | 41,568 psi | 88% | 2270 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 96% | 40,553 psi | 86% | 2316 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 41,872 psi | 89% | 2247 fps | 99.9% |
| Winchester 760 | <<locked>> | 86% | 40,495 psi | 86% | 2270 fps | 96.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,246 psi | 79% | 2365 fps | 100% |
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 3100 | <<locked>> | 92% | 33,417 psi | 71% | 2129 fps | 95.2% |
| Accurate 4350 | <<locked>> | 80% | 30,951 psi | 66% | 2083 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,270 psi | 66% | 2096 fps | 96.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,780 psi | 74% | 2201 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 25,599 psi | 54% | 1978 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 98% | 34,577 psi | 73% | 2211 fps | 95.9% |
| Alliant Reloder-26 | 90.7 gr | 88% | 30,821 psi | 65% | 2169 fps | 95.3% |
| Bofors RP7 | <<locked>> | 82% | 38,334 psi | 81% | 2149 fps | 95% |
| Hodgdon H414 | <<locked>> | 84% | 37,869 psi | 80% | 2221 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,747 psi | 61% | 2011 fps | 97.2% |
| Hodgdon Superformance | <<locked>> | 86% | 39,653 psi | 84% | 2280 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,832 psi | 57% | 1293 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 38,435 psi | 82% | 2178 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 37,420 psi | 79% | 2133 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 30,110 psi | 64% | 2051 fps | 96% |
| Lovex S065 | <<locked>> | 80% | 34,998 psi | 74% | 2093 fps | 96.1% |
| Lovex S070 | <<locked>> | 84% | 37,550 psi | 80% | 2162 fps | 95.7% |
| Lovex S071 | <<locked>> | 98% | 34,258 psi | 73% | 2149 fps | 95.6% |
| Norma MRP | <<locked>> | 94% | 38,130 psi | 81% | 2300 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 31,343 psi | 66% | 2087 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 84% | 34,722 psi | 74% | 2165 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,253 psi | 58% | 1322 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,043 psi | 79% | 2254 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 30,661 psi | 65% | 2100 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 32,735 psi | 69% | 2149 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 37,753 psi | 80% | 2172 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 82% | 38,334 psi | 81% | 2149 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,998 psi | 74% | 2093 fps | 96.1% |
| Shooters World SW4350 | <<locked>> | 84% | 37,550 psi | 80% | 2162 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,566 psi | 82% | 2215 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,987 psi | 85% | 2110 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 36,318 psi | 77% | 2090 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 38,508 psi | 82% | 2175 fps | 99.5% |
| Somchem S365 | 76.3 gr | 80% | 28,079 psi | 60% | 2047 fps | 98.4% |
| Somchem S385 | <<locked>> | 92% | 38,566 psi | 82% | 2218 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 36,579 psi | 78% | 2119 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 32,619 psi | 69% | 2087 fps | 96.6% |
| Vihtavuori N550 | <<locked>> | 80% | 32,140 psi | 68% | 2090 fps | 96.2% |
| Vihtavuori N555 | 79 gr | 84% | 27,485 psi | 58% | 2044 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,271 psi | 68% | 2067 fps | 98.5% |
| Winchester 760 | <<locked>> | 84% | 37,869 psi | 80% | 2221 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 25,469 psi | 54% | 2044 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 66 powders for .416 Rigby loaded with the .416 | 400gr | Barnes Solid RN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,385 fps; across all powders the maximum-charge window runs from 1,447 fps to 2,385 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 66 of the 66 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 75–90 %, leaving at least 10 % headroom. The 400.0 gr projectile in 0.416" calls for a 1:20.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, Bofors RP15 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, Somchem S365, Vihtavuori N555 rank at the top here: for .416 Rigby with the .416 | 400gr | Barnes Solid RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2209, ADI AR 2213 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.