Load Specifications
Load data in caliber .416 Rigby with .416 | 450gr | Woodleigh RN SN bullet and 48 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and Norma MRP.
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>> | 94% | 41,321 psi | 88% | 2152 fps | 98.9% |
| Accurate 4350 | <<locked>> | 84% | 40,640 psi | 86% | 2146 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 41,916 psi | 89% | 2175 fps | 96.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 42,221 psi | 90% | 2195 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 82% | 41,901 psi | 89% | 2205 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 41,495 psi | 88% | 2172 fps | 96.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 41,365 psi | 88% | 2215 fps | 96.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 41,858 psi | 89% | 2215 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,495 psi | 88% | 2241 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 92% | 40,611 psi | 86% | 2264 fps | 99.7% |
| Bofors RP15 | <<locked>> | 96% | 40,669 psi | 86% | 2201 fps | 96.4% |
| Bofors RP5 | <<locked>> | 94% | 41,365 psi | 88% | 2215 fps | 96.8% |
| Bofors RP7 | <<locked>> | 82% | 42,467 psi | 90% | 2110 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 82% | 39,987 psi | 85% | 2139 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 42,003 psi | 89% | 2142 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 40,669 psi | 86% | 2267 fps | 97.1% |
| Hodgdon Superformance | <<locked>> | 84% | 41,785 psi | 89% | 2205 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 77% | 1375 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 40,408 psi | 86% | 2096 fps | 97.3% |
| IMR 4831 | <<locked>> | 86% | 41,597 psi | 88% | 2149 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 41,249 psi | 88% | 2090 fps | 99% |
| Lovex S070 | <<locked>> | 84% | 41,901 psi | 89% | 2123 fps | 98.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,177 psi | 89% | 2165 fps | 99% |
| Norma 204 | <<locked>> | 86% | 42,554 psi | 90% | 2169 fps | 96.7% |
| Norma MRP | <<locked>> | 92% | 40,654 psi | 86% | 2231 fps | 98% |
| Norma URP | <<locked>> | 84% | 40,364 psi | 86% | 2139 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 86% | 41,771 psi | 89% | 2178 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 98% | 40,727 psi | 86% | 2192 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,086 psi | 79% | 1407 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 40,263 psi | 85% | 2162 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 41,974 psi | 89% | 2221 fps | 99.6% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 40,118 psi | 85% | 2257 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 90% | 40,538 psi | 86% | 2159 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 82% | 42,467 psi | 90% | 2110 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 82% | 41,249 psi | 88% | 2090 fps | 99% |
| Shooters World SW4350 | <<locked>> | 84% | 41,901 psi | 89% | 2123 fps | 98.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,408 psi | 86% | 2047 fps | 97.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 40,147 psi | 85% | 2156 fps | 96.5% |
| Somchem S365 | <<locked>> | 88% | 41,640 psi | 88% | 2185 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 41,147 psi | 87% | 2146 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 84% | 41,959 psi | 89% | 2136 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 94% | 40,277 psi | 85% | 2123 fps | 96.9% |
| Vihtavuori N550 | <<locked>> | 84% | 41,307 psi | 88% | 2139 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 92% | 41,147 psi | 87% | 2192 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 41,060 psi | 87% | 2113 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 40,118 psi | 85% | 2142 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,656 psi | 90% | 2346 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 40,437 psi | 86% | 2129 fps | 96.2% |
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>> | 84% | 29,660 psi | 63% | 1936 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 35,476 psi | 75% | 2054 fps | 99% |
| ADI AR 2209 | <<locked>> | 86% | 37,014 psi | 79% | 2083 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,969 psi | 74% | 2064 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,204 psi | 83% | 2162 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 36,622 psi | 78% | 2080 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 90% | 36,448 psi | 77% | 2123 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,527 psi | 54% | 1877 fps | 97.3% |
| Alliant Reloder-25 | <<locked>> | 88% | 28,776 psi | 61% | 1969 fps | 95.3% |
| Alliant Reloder-26 | 83.5 gr | 80% | 26,847 psi | 57% | 1959 fps | 95.4% |
| Bofors RP15 | <<locked>> | 94% | 38,276 psi | 81% | 2156 fps | 95.7% |
| Bofors RP5 | <<locked>> | 90% | 36,448 psi | 77% | 2123 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 39,914 psi | 85% | 2067 fps | 97.2% |
| Hodgdon H414 | <<locked>> | 80% | 37,449 psi | 79% | 2093 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,474 psi | 69% | 1978 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 96% | 35,969 psi | 76% | 2165 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 36,332 psi | 77% | 2103 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,209 psi | 58% | 1224 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 35,607 psi | 76% | 2011 fps | 95.9% |
| IMR 4831 | <<locked>> | 80% | 34,243 psi | 73% | 2018 fps | 98.7% |
| Lovex S065 | <<locked>> | 80% | 38,798 psi | 82% | 2051 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 37,057 psi | 79% | 2037 fps | 97.2% |
| Lovex S071 | <<locked>> | 88% | 28,848 psi | 61% | 1919 fps | 95.2% |
| Norma 204 | <<locked>> | 82% | 37,159 psi | 79% | 2073 fps | 95% |
| Norma MRP | 87.2 gr | 86% | 33,330 psi | 71% | 2087 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 35,505 psi | 75% | 2054 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 80% | 34,258 psi | 73% | 2041 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 94% | 35,476 psi | 75% | 2093 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,702 psi | 59% | 1257 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,056 psi | 74% | 2070 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 34,330 psi | 73% | 2077 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 35,056 psi | 74% | 2152 fps | 96% |
| Rottweil R 905 | <<locked>> | 88% | 37,869 psi | 80% | 2113 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 39,914 psi | 85% | 2067 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,798 psi | 82% | 2051 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 80% | 37,057 psi | 79% | 2037 fps | 97.2% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,985 psi | 81% | 2008 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 37,521 psi | 80% | 2106 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 31,981 psi | 68% | 2018 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 33,924 psi | 72% | 2014 fps | 95.3% |
| Vihtavuori N160 | <<locked>> | 80% | 36,854 psi | 78% | 2051 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 35,433 psi | 75% | 2037 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 36,274 psi | 77% | 2054 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 27,833 psi | 59% | 1936 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,897 psi | 76% | 2028 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 37,565 psi | 80% | 2096 fps | 97.2% |
| Winchester StaBALL HD | 80.2 gr | 80% | 22,466 psi | 48% | 1854 fps | 96% |
| Winchester Supreme 780 | <<locked>> | 90% | 37,826 psi | 80% | 2083 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 65 powders for .416 Rigby loaded with the .416 | 450gr | Woodleigh RN SN. Winchester StaBALL HD delivers the highest muzzle velocity at 2,346 fps; across all powders the maximum-charge window runs from 1,375 fps to 2,346 fps. ADI AR 2217 gives the best case fill at 100 %, and 65 of the 65 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 450.0 gr projectile in 0.416" calls for a 1:23.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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, Winchester StaBALL HD, Norma MRP rank at the top here: for .416 Rigby with the .416 | 450gr | Woodleigh RN SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2217, 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.