Load Specifications
Load data in caliber .470 N.E. with .475 | 400gr | Speer SP GD bullet and 17 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, Hodgdon Hybrid 100V and ReloadSwiss RS 14.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4064 | <<locked>> | 82% | 34,722 psi | 89% | 2375 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 34,664 psi | 89% | 2375 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 86% | 34,476 psi | 88% | 2444 fps | 97.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,518 psi | 86% | 2415 fps | 96.9% |
| Bofors RP3 | <<locked>> | 82% | 33,837 psi | 86% | 2369 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 33,750 psi | 86% | 2369 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,418 psi | 88% | 1637 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 34,650 psi | 88% | 2333 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,693 psi | 89% | 1677 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 34,374 psi | 88% | 2454 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 84% | 33,924 psi | 87% | 2365 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 33,330 psi | 85% | 2369 fps | 96.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 35,114 psi | 90% | 2293 fps | 99.9% |
| Somchem S355 | <<locked>> | 84% | 35,085 psi | 90% | 2375 fps | 97.5% |
| Somchem S365 | <<locked>> | 94% | 35,128 psi | 90% | 2464 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 84% | 33,504 psi | 86% | 2320 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 34,635 psi | 88% | 2349 fps | 97.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4064 | <<locked>> | 80% | 32,372 psi | 83% | 2326 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,314 psi | 83% | 2323 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 82% | 29,936 psi | 76% | 2329 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 31,430 psi | 80% | 2365 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 31,473 psi | 80% | 2316 fps | 96.9% |
| Hodgdon Hybrid 100V | 109.7 gr | 88% | 29,544 psi | 75% | 2270 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,469 psi | 65% | 1467 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 32,460 psi | 83% | 2287 fps | 95.4% |
| ReloadSwiss RS 14 | 35.4 gr | 80% | 25,512 psi | 65% | 1503 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,863 psi | 76% | 2339 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 80% | 29,414 psi | 75% | 2260 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,053 psi | 79% | 2316 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,808 psi | 84% | 2251 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 30,647 psi | 78% | 2277 fps | 95.9% |
| Somchem S365 | 110.3 gr | 86% | 26,745 psi | 68% | 2251 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 29,109 psi | 74% | 2221 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 30,110 psi | 77% | 2244 fps | 95.6% |
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 39 powders for .470 N.E. loaded with the .475 | 400gr | Speer SP GD. Alliant Reloder-26 delivers the highest muzzle velocity at 2,484 fps; across all powders the maximum-charge window runs from 1,637 fps to 2,484 fps. Accurate 3100 gives the best case fill at 100 %, and 39 of the 39 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (270 MPa), the top charges use 76–90 %, leaving at least 10 % headroom. Accurate 3100, Alliant Reloder-23, Hodgdon TrailBoss 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. Somchem S365, Hodgdon Hybrid 100V, ReloadSwiss RS 14 rank at the top here: for .470 N.E. with the .475 | 400gr | Speer SP GD they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, Alliant Reloder-26, Hodgdon H380 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.