Load Specifications
Load data in caliber .280 Riml. N.E. Ross with .284 | 170gr | Norma VULKAN bullet and 28 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 ADI AR 2225.
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>> | 82% | 40,770 psi | 86% | 2549 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 82% | 41,916 psi | 89% | 2667 fps | 96.5% |
| ADI AR 2213 | <<locked>> | 82% | 40,176 psi | 85% | 2615 fps | 97.1% |
| ADI AR 2217 | <<locked>> | 92% | 41,597 psi | 88% | 2644 fps | 97.9% |
| ADI AR 2225 | <<locked>> | 94% | 40,176 psi | 85% | 2674 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 82% | 40,640 psi | 86% | 2621 fps | 98.4% |
| Alliant Reloder-23 | <<locked>> | 84% | 42,003 psi | 89% | 2615 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 41,466 psi | 88% | 2671 fps | 100% |
| Bofors RP15 | <<locked>> | 84% | 40,480 psi | 86% | 2615 fps | 98.3% |
| Bofors RP30 | <<locked>> | 90% | 41,118 psi | 87% | 2661 fps | 98% |
| Bofors RP5 | <<locked>> | 82% | 40,640 psi | 86% | 2621 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 88% | 39,755 psi | 84% | 2608 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 82% | 42,105 psi | 89% | 2598 fps | 97% |
| Hodgdon Retumbo | <<locked>> | 88% | 40,611 psi | 86% | 2723 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,362 psi | 79% | 1755 fps | 100% |
| IMR 7828 SSC | <<locked>> | 84% | 41,669 psi | 88% | 2657 fps | 97.6% |
| IMR 8133 Enduron | <<locked>> | 98% | 41,742 psi | 89% | 2700 fps | 98.1% |
| Lovex S071 | <<locked>> | 88% | 42,554 psi | 90% | 2579 fps | 99.9% |
| Norma 217 | <<locked>> | 98% | 41,959 psi | 89% | 2726 fps | 99.6% |
| Ramshot Grand | <<locked>> | 84% | 41,568 psi | 88% | 2667 fps | 98% |
| Ramshot Magnum | <<locked>> | 86% | 40,016 psi | 85% | 2608 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,348 psi | 81% | 1798 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 39,885 psi | 85% | 2700 fps | 99.7% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 41,901 psi | 89% | 2717 fps | 96.8% |
| Vihtavuori N165 | <<locked>> | 84% | 41,756 psi | 89% | 2566 fps | 99% |
| Vihtavuori N565 | <<locked>> | 86% | 40,538 psi | 86% | 2625 fps | 97.1% |
| Winchester StaBALL HD | <<locked>> | 86% | 42,308 psi | 90% | 2733 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 41,220 psi | 87% | 2566 fps | 98.4% |
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 3100 | <<locked>> | 80% | 38,116 psi | 81% | 2493 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 80% | 39,204 psi | 83% | 2608 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 80% | 37,579 psi | 80% | 2556 fps | 96.3% |
| ADI AR 2217 | <<locked>> | 86% | 34,229 psi | 73% | 2474 fps | 95.2% |
| ADI AR 2225 | 57.8 gr | 82% | 27,209 psi | 58% | 2323 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,000 psi | 81% | 2562 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,811 psi | 78% | 2516 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,807 psi | 67% | 2448 fps | 98.9% |
| Bofors RP15 | <<locked>> | 80% | 35,433 psi | 75% | 2503 fps | 96.8% |
| Bofors RP30 | <<locked>> | 84% | 33,504 psi | 71% | 2487 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 38,000 psi | 81% | 2562 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 82% | 32,561 psi | 69% | 2431 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,378 psi | 84% | 2543 fps | 96.2% |
| Hodgdon Retumbo | 56.4 gr | 80% | 31,024 psi | 66% | 2470 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,065 psi | 60% | 1568 fps | 100% |
| IMR 7828 SSC | <<locked>> | 80% | 36,405 psi | 77% | 2536 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 92% | 34,069 psi | 72% | 2523 fps | 95.4% |
| Lovex S071 | <<locked>> | 80% | 32,996 psi | 70% | 2379 fps | 98.4% |
| Norma 217 | <<locked>> | 86% | 28,050 psi | 60% | 2379 fps | 95% |
| Ramshot Grand | <<locked>> | 80% | 35,998 psi | 76% | 2543 fps | 96.2% |
| Ramshot Magnum | <<locked>> | 80% | 32,039 psi | 68% | 2425 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,819 psi | 61% | 1608 fps | 100% |
| ReloadSwiss RS 76 | 60.4 gr | 80% | 30,066 psi | 64% | 2444 fps | 96.6% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 38,943 psi | 83% | 2654 fps | 95.9% |
| Vihtavuori N165 | <<locked>> | 80% | 36,579 psi | 78% | 2461 fps | 97.8% |
| Vihtavuori N565 | <<locked>> | 82% | 35,360 psi | 75% | 2507 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,576 psi | 71% | 2562 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,566 psi | 82% | 2510 fps | 97.8% |
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 28 powders for .280 Riml. N.E. Ross loaded with the .284 | 170gr | Norma VULKAN. Winchester StaBALL HD delivers the highest muzzle velocity at 2,733 fps; across all powders the maximum-charge window runs from 1,755 fps to 2,733 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 28 of the 28 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 170.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14 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, ADI AR 2225 rank at the top here: for .280 Riml. N.E. Ross with the .284 | 170gr | Norma VULKAN 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.