Load Specifications
Load data in caliber .416 Rigby with .416 | 430gr | North Fork Semi Spitz bullet and 45 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 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>> | 98% | 42,424 psi | 90% | 2205 fps | 98.4% |
| Accurate 4350 | <<locked>> | 88% | 42,047 psi | 89% | 2205 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 41,176 psi | 87% | 2211 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 40,915 psi | 87% | 2228 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 98% | 40,379 psi | 86% | 2228 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,869 psi | 80% | 2201 fps | 98% |
| Alliant Reloder-26 | <<locked>> | 96% | 41,858 psi | 89% | 2320 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 41,829 psi | 89% | 2126 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 86% | 41,727 psi | 89% | 2201 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 84% | 42,496 psi | 90% | 2172 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 40,785 psi | 87% | 2162 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 40,959 psi | 87% | 2218 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,100 psi | 77% | 1385 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 42,061 psi | 89% | 2156 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,843 psi | 87% | 2110 fps | 96.9% |
| IMR 4831 | <<locked>> | 88% | 40,364 psi | 86% | 2162 fps | 99.3% |
| Lovex S065 | <<locked>> | 84% | 40,524 psi | 86% | 2110 fps | 98.2% |
| Lovex S070 | <<locked>> | 86% | 41,060 psi | 87% | 2139 fps | 97.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 37,797 psi | 80% | 2129 fps | 97.4% |
| Norma MRP | <<locked>> | 96% | 41,930 psi | 89% | 2283 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 41,945 psi | 89% | 2201 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 40,625 psi | 86% | 2195 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,666 psi | 78% | 1417 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 40,785 psi | 87% | 2228 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 41,611 psi | 88% | 2224 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 41,118 psi | 87% | 2238 fps | 99% |
| Rottweil R 903 | <<locked>> | 82% | 41,408 psi | 88% | 2142 fps | 100% |
| Rottweil R 905 | <<locked>> | 94% | 41,771 psi | 89% | 2211 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 84% | 41,829 psi | 89% | 2126 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 40,524 psi | 86% | 2110 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 86% | 41,060 psi | 87% | 2139 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 42,554 psi | 90% | 2192 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,540 psi | 90% | 2110 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 41,394 psi | 88% | 2208 fps | 95.8% |
| Somchem S355 | <<locked>> | 82% | 42,061 psi | 89% | 2146 fps | 100% |
| Somchem S365 | <<locked>> | 90% | 40,103 psi | 85% | 2205 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 42,554 psi | 90% | 2201 fps | 97% |
| Vihtavuori N150 | <<locked>> | 82% | 40,089 psi | 85% | 2087 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 40,944 psi | 87% | 2152 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 98% | 41,684 psi | 88% | 2175 fps | 96.2% |
| Vihtavuori N550 | <<locked>> | 86% | 40,205 psi | 85% | 2159 fps | 99% |
| Vihtavuori N555 | <<locked>> | 96% | 41,989 psi | 89% | 2247 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 40,393 psi | 86% | 2133 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 41,872 psi | 89% | 2205 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,479 psi | 82% | 2303 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>> | 90% | 32,474 psi | 69% | 2028 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 32,082 psi | 68% | 2024 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,213 psi | 68% | 2034 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,781 psi | 76% | 2133 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 82% | 24,845 psi | 53% | 1883 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 31,517 psi | 67% | 2060 fps | 95.4% |
| Alliant Reloder-26 | 85.8 gr | 86% | 29,849 psi | 63% | 2067 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 36,927 psi | 78% | 2041 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 34,272 psi | 73% | 2064 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 82% | 39,871 psi | 85% | 2126 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,646 psi | 63% | 1952 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 84% | 38,145 psi | 81% | 2165 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,890 psi | 57% | 1234 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 37,173 psi | 79% | 2070 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,334 psi | 81% | 2067 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 31,125 psi | 66% | 1991 fps | 97.1% |
| Lovex S065 | <<locked>> | 80% | 35,911 psi | 76% | 2028 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 34,084 psi | 72% | 2011 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 31,343 psi | 66% | 2005 fps | 95.3% |
| Norma MRP | 89.1 gr | 92% | 36,869 psi | 78% | 2188 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 32,314 psi | 69% | 2024 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 82% | 33,562 psi | 71% | 2057 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,340 psi | 58% | 1263 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,072 psi | 81% | 2182 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,749 psi | 67% | 2041 fps | 96.9% |
| ReloadSwiss RS 70 | 79.1 gr | 80% | 31,546 psi | 67% | 2041 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 38,885 psi | 82% | 2103 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 92% | 39,218 psi | 83% | 2165 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 36,927 psi | 78% | 2041 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,911 psi | 76% | 2028 fps | 97.1% |
| Shooters World SW4350 | <<locked>> | 80% | 34,084 psi | 72% | 2011 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,769 psi | 84% | 2146 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 35,070 psi | 74% | 1982 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 38,870 psi | 82% | 2162 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 39,537 psi | 84% | 2103 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 29,008 psi | 62% | 1988 fps | 99.2% |
| Somchem S385 | <<locked>> | 90% | 37,362 psi | 79% | 2110 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 37,652 psi | 80% | 2047 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 33,663 psi | 71% | 2024 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 96% | 39,189 psi | 83% | 2133 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 33,112 psi | 70% | 2024 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 80% | 25,092 psi | 53% | 1900 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,156 psi | 70% | 2005 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 34,272 psi | 73% | 2064 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 84% | 23,279 psi | 49% | 1900 fps | 95% |
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 68 powders for .416 Rigby loaded with the .416 | 430gr | North Fork Semi Spitz. Alliant Reloder-26 delivers the highest muzzle velocity at 2,320 fps; across all powders the maximum-charge window runs from 1,385 fps to 2,320 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 68 of the 68 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 430.0 gr projectile in 0.416" calls for a 1:19.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Bofors RP15, Bofors RP30 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, ReloadSwiss RS 70, Norma MRP rank at the top here: for .416 Rigby with the .416 | 430gr | North Fork Semi Spitz they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, 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.