Load Specifications
Load data in caliber .280 Riml. N.E. Ross with .284 | 160gr | Brenneke TAG bullet and 37 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Alliant Reloder-25.
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>> | 86% | 42,656 psi | 90% | 2664 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 82% | 41,800 psi | 89% | 2690 fps | 98% |
| ADI AR 2213 | <<locked>> | 86% | 42,598 psi | 90% | 2743 fps | 97.1% |
| ADI AR 2217 | <<locked>> | 94% | 40,915 psi | 87% | 2700 fps | 96.9% |
| ADI AR 2225 | <<locked>> | 98% | 41,843 psi | 89% | 2785 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 82% | 41,742 psi | 89% | 2684 fps | 98% |
| Alliant Reloder-22 | <<locked>> | 84% | 39,914 psi | 85% | 2684 fps | 97.7% |
| Alliant Reloder-23 | <<locked>> | 86% | 41,220 psi | 87% | 2687 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 40,509 psi | 86% | 2730 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 82% | 39,769 psi | 84% | 2733 fps | 100% |
| Bofors RP15 | <<locked>> | 88% | 42,366 psi | 90% | 2736 fps | 98.1% |
| Bofors RP30 | <<locked>> | 92% | 40,016 psi | 85% | 2717 fps | 97% |
| Bofors RP5 | <<locked>> | 84% | 39,914 psi | 85% | 2684 fps | 97.7% |
| Hodgdon H1000 | <<locked>> | 92% | 42,061 psi | 89% | 2730 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 84% | 42,598 psi | 90% | 2684 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,785 psi | 89% | 2667 fps | 96.2% |
| Hodgdon Retumbo | <<locked>> | 92% | 42,395 psi | 90% | 2841 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,159 psi | 79% | 1804 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,510 psi | 88% | 2628 fps | 96.2% |
| IMR 7828 SSC | <<locked>> | 86% | 40,959 psi | 87% | 2717 fps | 96.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,161 psi | 85% | 2743 fps | 96.9% |
| Lovex S071 | <<locked>> | 90% | 41,234 psi | 87% | 2638 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 40,379 psi | 86% | 2772 fps | 99% |
| Norma MRP | <<locked>> | 84% | 42,061 psi | 89% | 2756 fps | 99.2% |
| Ramshot Grand | <<locked>> | 86% | 40,843 psi | 87% | 2726 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 90% | 41,989 psi | 89% | 2723 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,855 psi | 80% | 1844 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 42,047 psi | 89% | 2825 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 82% | 40,915 psi | 87% | 2664 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 40,567 psi | 86% | 2661 fps | 97.8% |
| Somchem S385 | <<locked>> | 82% | 41,452 psi | 88% | 2648 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 86% | 41,220 psi | 87% | 2635 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 82% | 39,987 psi | 85% | 2651 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 42,163 psi | 89% | 2749 fps | 96.5% |
| Vihtavuori N565 | <<locked>> | 90% | 42,250 psi | 90% | 2736 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 88% | 40,770 psi | 86% | 2795 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 40,770 psi | 86% | 2631 fps | 97.7% |
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>> | 80% | 34,650 psi | 74% | 2497 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 80% | 39,030 psi | 83% | 2631 fps | 97.2% |
| ADI AR 2213 | <<locked>> | 82% | 37,188 psi | 79% | 2618 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 90% | 35,868 psi | 76% | 2585 fps | 95% |
| ADI AR 2225 | <<locked>> | 88% | 30,066 psi | 64% | 2480 fps | 95.7% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,044 psi | 83% | 2625 fps | 97.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,766 psi | 74% | 2562 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,344 psi | 71% | 2523 fps | 100% |
| Alliant Reloder-25 | 55.7 gr | 80% | 29,008 psi | 62% | 2438 fps | 97.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,782 psi | 78% | 2671 fps | 99.7% |
| Bofors RP15 | <<locked>> | 82% | 34,505 psi | 73% | 2556 fps | 95.7% |
| Bofors RP30 | <<locked>> | 88% | 34,780 psi | 74% | 2598 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 34,766 psi | 74% | 2562 fps | 96% |
| Hodgdon H1000 | <<locked>> | 88% | 36,651 psi | 78% | 2608 fps | 96.1% |
| Hodgdon H4831 | <<locked>> | 82% | 39,769 psi | 84% | 2625 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 82% | 39,001 psi | 83% | 2608 fps | 95.2% |
| Hodgdon Retumbo | 59.1 gr | 84% | 32,343 psi | 69% | 2579 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,833 psi | 59% | 1614 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 38,885 psi | 82% | 2572 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 84% | 38,218 psi | 81% | 2654 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 96% | 35,157 psi | 75% | 2625 fps | 95% |
| Lovex S071 | <<locked>> | 80% | 29,617 psi | 63% | 2369 fps | 96.6% |
| Norma 217 | <<locked>> | 92% | 30,705 psi | 65% | 2526 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 36,361 psi | 77% | 2631 fps | 97.9% |
| Ramshot Grand | <<locked>> | 82% | 35,288 psi | 75% | 2595 fps | 95% |
| Ramshot Magnum | <<locked>> | 82% | 31,154 psi | 66% | 2470 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,326 psi | 60% | 1650 fps | 100% |
| ReloadSwiss RS 76 | 63.2 gr | 84% | 31,285 psi | 66% | 2549 fps | 96.3% |
| Rottweil R 905 | <<locked>> | 80% | 38,174 psi | 81% | 2605 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,855 psi | 80% | 2602 fps | 97.1% |
| Somchem S385 | <<locked>> | 80% | 38,798 psi | 82% | 2589 fps | 98.1% |
| Vihtavuori N165 | <<locked>> | 80% | 33,591 psi | 71% | 2464 fps | 96.1% |
| Vihtavuori N555 | <<locked>> | 80% | 37,478 psi | 80% | 2598 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 39,378 psi | 84% | 2687 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 88% | 39,291 psi | 83% | 2674 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,588 psi | 63% | 2546 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,331 psi | 75% | 2513 fps | 96.1% |
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 37 powders for .280 Riml. N.E. Ross loaded with the .284 | 160gr | Brenneke TAG. Hodgdon Retumbo delivers the highest muzzle velocity at 2,841 fps; across all powders the maximum-charge window runs from 1,804 fps to 2,841 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 37 of the 37 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 79–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, IMR 8133 Enduron, Norma 217 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. Hodgdon Retumbo, ReloadSwiss RS 76, Alliant Reloder-25 rank at the top here: for .280 Riml. N.E. Ross with the .284 | 160gr | Brenneke TAG 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.