Load Specifications
Load data in caliber .416 Rigby with .416 | 400gr | Speer TBBC 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, Alliant Reloder-16 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100ᴾ | <<locked>> | 100% | 42,641 psi | 90% | 2290 fps | 97.8% |
| Accurate 4350 | <<locked>> | 90% | 42,395 psi | 90% | 2297 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 82% | 42,134 psi | 89% | 2211 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 41,959 psi | 89% | 2234 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 90% | 41,698 psi | 88% | 2303 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 86% | 41,568 psi | 88% | 2326 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,553 psi | 86% | 2316 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 35,911 psi | 76% | 2231 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 42,279 psi | 90% | 2408 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 41,814 psi | 89% | 2241 fps | 99.9% |
| Bofors RP7 | <<locked>> | 86% | 42,467 psi | 90% | 2218 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 82% | 42,656 psi | 90% | 2247 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 88% | 42,177 psi | 89% | 2293 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 41,133 psi | 87% | 2251 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 41,626 psi | 88% | 2306 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,737 psi | 76% | 1437 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 42,583 psi | 90% | 2244 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,481 psi | 88% | 2201 fps | 96.3% |
| IMR 4831 | <<locked>> | 90% | 40,582 psi | 86% | 2254 fps | 98.8% |
| Lovex S065 | <<locked>> | 86% | 41,147 psi | 87% | 2201 fps | 97.7% |
| Lovex S070 | <<locked>> | 88% | 41,539 psi | 88% | 2228 fps | 96.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 35,505 psi | 75% | 2165 fps | 95.8% |
| Norma MRP | <<locked>> | 98% | 42,366 psi | 90% | 2372 fps | 96.6% |
| Norma URP | <<locked>> | 90% | 42,250 psi | 90% | 2293 fps | 99% |
| Ramshot Hunter | <<locked>> | 90% | 41,031 psi | 87% | 2280 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,260 psi | 77% | 1470 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 41,336 psi | 88% | 2323 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 41,901 psi | 89% | 2313 fps | 98.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 41,655 psi | 88% | 2329 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 84% | 41,989 psi | 89% | 2238 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 86% | 42,467 psi | 90% | 2218 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 86% | 41,147 psi | 87% | 2201 fps | 97.7% |
| Shooters World SW4350 | <<locked>> | 88% | 41,539 psi | 88% | 2228 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 40,364 psi | 86% | 2241 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 41,684 psi | 88% | 2129 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 40,495 psi | 86% | 2156 fps | 96.2% |
| Somchem S355 | <<locked>> | 84% | 42,569 psi | 90% | 2238 fps | 99.8% |
| Somchem S365 | <<locked>> | 92% | 40,393 psi | 86% | 2297 fps | 100% |
| Vihtavuori N150 | <<locked>> | 84% | 40,698 psi | 86% | 2182 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 41,350 psi | 88% | 2244 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 88% | 40,654 psi | 86% | 2247 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 98% | 41,974 psi | 89% | 2336 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 41,031 psi | 87% | 2224 fps | 99.8% |
| Winchester 760 | <<locked>> | 88% | 42,308 psi | 90% | 2297 fps | 96.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,289 psi | 77% | 2336 fps | 99.9% |
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>> | 94% | 34,722 psi | 74% | 2152 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 30,139 psi | 64% | 2060 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 39,653 psi | 84% | 2169 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,465 psi | 84% | 2192 fps | 99.7% |
| Alliant Reloder-16 | 73.1 gr | 80% | 30,603 psi | 65% | 2070 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,011 psi | 72% | 2178 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 86% | 26,614 psi | 56% | 2001 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 98% | 33,765 psi | 72% | 2182 fps | 95.3% |
| Alliant Reloder-26 | 90.8 gr | 90% | 32,126 psi | 68% | 2195 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 39,160 psi | 83% | 2195 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 39,987 psi | 85% | 2175 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 39,827 psi | 84% | 2198 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 36,956 psi | 78% | 2195 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,181 psi | 60% | 1991 fps | 96.8% |
| Hodgdon Superformance | <<locked>> | 86% | 38,798 psi | 82% | 2254 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,687 psi | 57% | 1283 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 40,118 psi | 85% | 2201 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 39,088 psi | 83% | 2159 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 29,385 psi | 62% | 2028 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 34,272 psi | 73% | 2073 fps | 95.7% |
| Lovex S070 | <<locked>> | 84% | 36,738 psi | 78% | 2139 fps | 95.3% |
| Lovex S071 | <<locked>> | 98% | 33,286 psi | 71% | 2123 fps | 95% |
| Norma MRP | <<locked>> | 96% | 39,610 psi | 84% | 2320 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 30,632 psi | 65% | 2064 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 84% | 33,910 psi | 72% | 2142 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,093 psi | 57% | 1312 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,230 psi | 77% | 2231 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 29,907 psi | 63% | 2073 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 31,995 psi | 68% | 2123 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 36,898 psi | 78% | 2149 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 39,987 psi | 85% | 2175 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,272 psi | 73% | 2073 fps | 95.7% |
| Shooters World SW4350 | <<locked>> | 84% | 36,738 psi | 78% | 2139 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,826 psi | 80% | 2195 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,175 psi | 83% | 2090 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 37,942 psi | 80% | 2110 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 37,681 psi | 80% | 2152 fps | 99.3% |
| Somchem S365 | 74.7 gr | 80% | 27,441 psi | 58% | 2024 fps | 98% |
| Vihtavuori N150 | <<locked>> | 80% | 35,810 psi | 76% | 2096 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 31,879 psi | 68% | 2064 fps | 96.2% |
| Vihtavuori N550 | <<locked>> | 80% | 31,343 psi | 66% | 2064 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 86% | 28,529 psi | 61% | 2064 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,546 psi | 67% | 2044 fps | 98.1% |
| Winchester 760 | <<locked>> | 84% | 37,072 psi | 79% | 2198 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 90% | 26,469 psi | 56% | 2067 fps | 96.2% |
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 45 powders for .416 Rigby loaded with the .416 | 400gr | Speer TBBC. Alliant Reloder-26 delivers the highest muzzle velocity at 2,408 fps; across all powders the maximum-charge window runs from 1,437 fps to 2,408 fps. Accurate 3100 gives the best case fill at 100 %, and 45 of the 45 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 1:19.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, 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, Alliant Reloder-16, Somchem S365 rank at the top here: for .416 Rigby with the .416 | 400gr | Speer TBBC 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.