Load Specifications
Load data in caliber .280 Riml. N.E. Ross with .284 | 130gr | Fox Classic Hunter bullet and 26 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, ReloadSwiss RS 76 and Alliant Reloder-26.
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 3100 | <<locked>> | 90% | 40,480 psi | 86% | 2871 fps | 97.9% |
| Accurate 4350 | <<locked>> | 82% | 41,785 psi | 89% | 2920 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 82% | 40,495 psi | 86% | 2933 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 92% | 41,394 psi | 88% | 2963 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 41,002 psi | 87% | 2989 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 88% | 40,074 psi | 85% | 3005 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 40,669 psi | 86% | 2871 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,463 psi | 77% | 1982 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 41,147 psi | 87% | 2858 fps | 96.5% |
| IMR 4831 | <<locked>> | 82% | 39,972 psi | 85% | 2864 fps | 99.1% |
| Lovex S071 | <<locked>> | 96% | 41,727 psi | 89% | 2897 fps | 98.2% |
| Norma MRP | <<locked>> | 88% | 39,929 psi | 85% | 2966 fps | 96.7% |
| Norma URP | <<locked>> | 82% | 41,524 psi | 88% | 2917 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 82% | 40,437 psi | 86% | 2904 fps | 97.8% |
| Ramshot Magnum | <<locked>> | 94% | 40,161 psi | 85% | 2920 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,014 psi | 79% | 2024 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 41,727 psi | 89% | 2940 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 40,408 psi | 86% | 2956 fps | 98.8% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 39,842 psi | 85% | 3002 fps | 97% |
| Somchem S365 | <<locked>> | 84% | 40,712 psi | 86% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 40,001 psi | 85% | 2858 fps | 96.2% |
| Vihtavuori N165 | <<locked>> | 92% | 42,206 psi | 90% | 2897 fps | 96.5% |
| Vihtavuori N550 | <<locked>> | 82% | 42,496 psi | 90% | 2917 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 88% | 40,451 psi | 86% | 2927 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 42,337 psi | 90% | 2881 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 39,639 psi | 84% | 3064 fps | 100% |
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 3100 | <<locked>> | 84% | 32,735 psi | 69% | 2684 fps | 95.3% |
| Accurate 4350 | <<locked>> | 80% | 38,928 psi | 83% | 2858 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,826 psi | 80% | 2871 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,630 psi | 59% | 2595 fps | 96.8% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,589 psi | 67% | 2733 fps | 95.3% |
| Alliant Reloder-26 | 60.2 gr | 80% | 29,660 psi | 63% | 2713 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,433 psi | 75% | 2753 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,224 psi | 58% | 1772 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,493 psi | 82% | 2799 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 37,333 psi | 79% | 2805 fps | 98.5% |
| Lovex S071 | <<locked>> | 90% | 34,069 psi | 72% | 2717 fps | 95.9% |
| Norma MRP | <<locked>> | 86% | 37,072 psi | 79% | 2894 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 38,769 psi | 82% | 2854 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 80% | 37,608 psi | 80% | 2838 fps | 96.9% |
| Ramshot Magnum | <<locked>> | 92% | 37,246 psi | 79% | 2851 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,601 psi | 59% | 1811 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,928 psi | 83% | 2877 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,768 psi | 80% | 2890 fps | 98.1% |
| ReloadSwiss RS 76 | 70.8 gr | 94% | 37,057 psi | 79% | 2923 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 35,230 psi | 75% | 2802 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 37,202 psi | 79% | 2795 fps | 95.2% |
| Vihtavuori N165 | <<locked>> | 90% | 39,421 psi | 84% | 2835 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 39,552 psi | 84% | 2851 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 30,603 psi | 65% | 2677 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,465 psi | 84% | 2818 fps | 99.9% |
| Winchester StaBALL HD | 57.8 gr | 80% | 24,279 psi | 52% | 2556 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 54 powders for .280 Riml. N.E. Ross loaded with the .284 | 130gr | Fox Classic Hunter. Winchester StaBALL HD delivers the highest muzzle velocity at 3,064 fps; across all powders the maximum-charge window runs from 1,982 fps to 3,064 fps. ADI AR 2217 gives the best case fill at 100 %, and 54 of the 54 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Winchester StaBALL HD, ReloadSwiss RS 76, Alliant Reloder-26 rank at the top here: for .280 Riml. N.E. Ross with the .284 | 130gr | Fox Classic Hunter they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, ADI AR 2217 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.