Load Specifications
Load data in caliber .600 N.E. with .620 | 900gr | Woodleigh RN SN bullet and 13 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, ReloadSwiss RS 14 and Hodgdon TrailBoss.
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% | 32,068 psi | 90% | 1932 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 31,575 psi | 89% | 1919 fps | 97.2% |
| Alliant Reloder-17 | <<locked>> | 86% | 31,241 psi | 88% | 1972 fps | 96.1% |
| Bofors RP3 | <<locked>> | 82% | 30,748 psi | 87% | 1919 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 30,632 psi | 86% | 1913 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 94% | 31,676 psi | 89% | 1243 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 94% | 31,894 psi | 90% | 1273 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 31,198 psi | 88% | 1978 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 84% | 30,850 psi | 87% | 1916 fps | 96.8% |
| Somchem S355 | <<locked>> | 84% | 32,097 psi | 90% | 1923 fps | 96.9% |
| Somchem S365 | <<locked>> | 94% | 31,372 psi | 88% | 1988 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 84% | 30,458 psi | 86% | 1877 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 31,401 psi | 88% | 1896 fps | 96.1% |
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% | 30,168 psi | 85% | 1893 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,602 psi | 83% | 1880 fps | 96.5% |
| Alliant Reloder-17 | <<locked>> | 84% | 29,269 psi | 82% | 1926 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 28,761 psi | 81% | 1877 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 28,877 psi | 81% | 1873 fps | 95.1% |
| Hodgdon TrailBoss | 40.4 gr | 80% | 25,628 psi | 72% | 1145 fps | 100% |
| ReloadSwiss RS 14 | 41.1 gr | 80% | 25,759 psi | 72% | 1171 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 27,514 psi | 77% | 1890 fps | 97% |
| Rottweil R 903 | <<locked>> | 80% | 27,122 psi | 76% | 1834 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 28,369 psi | 80% | 1844 fps | 95.5% |
| Somchem S365 | 131.1 gr | 88% | 26,223 psi | 74% | 1864 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 26,832 psi | 76% | 1798 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 29,472 psi | 83% | 1854 fps | 95.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
This overview compares 32 powders for .600 N.E. loaded with the .620 | 900gr | Woodleigh RN SN. Vihtavuori N555 delivers the highest muzzle velocity at 2,005 fps; across all powders the maximum-charge window runs from 1,243 fps to 2,005 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 32 of the 32 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (245 MPa), the top charges use 75–90 %, leaving at least 10 % headroom. Alliant Reloder-23, Vihtavuori N555, Winchester StaBALL HD 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, ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for .600 N.E. with the .620 | 900gr | Woodleigh RN SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, Alliant Reloder-16, Alliant Reloder-26 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.