Load Specifications
Load data in caliber .280 Rem. with .284 | 160gr | Speer Magnum Tip Soft Point bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-26 and Alliant Reloder-17.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 52,170 psi | 89% | 2595 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 50,125 psi | 85% | 2602 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,169 psi | 85% | 2687 fps | 99.1% |
| Accurate 4064 | <<locked>> | 84% | 52,489 psi | 89% | 2648 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 52,533 psi | 89% | 2740 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 51,126 psi | 87% | 2818 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 86% | 52,765 psi | 90% | 2674 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 50,473 psi | 86% | 2726 fps | 97.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 51,488 psi | 88% | 2785 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 50,299 psi | 86% | 2651 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 50,401 psi | 86% | 2667 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 50,328 psi | 86% | 2746 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 50,981 psi | 87% | 2769 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,011 psi | 90% | 2766 fps | 97.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,908 psi | 85% | 2762 fps | 97.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,137 psi | 80% | 2710 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,220 psi | 70% | 2628 fps | 98.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 49,937 psi | 85% | 2831 fps | 99.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 45,847 psi | 78% | 2690 fps | 96.1% |
| Bofors RP3 | <<locked>> | 84% | 50,517 psi | 86% | 2661 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,908 psi | 85% | 2762 fps | 97.3% |
| Bofors RP7 | <<locked>> | 88% | 50,575 psi | 86% | 2644 fps | 98% |
| Hodgdon H380 | <<locked>> | 84% | 51,285 psi | 87% | 2677 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 90% | 51,416 psi | 88% | 2736 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 88% | 51,634 psi | 88% | 2697 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 50,241 psi | 86% | 2674 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,272 psi | 89% | 2713 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 51,227 psi | 87% | 2766 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,216 psi | 62% | 1673 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,562 psi | 89% | 2661 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 51,822 psi | 88% | 2641 fps | 98.6% |
| IMR 4350 | <<locked>> | 92% | 51,039 psi | 87% | 2674 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 52,156 psi | 89% | 2671 fps | 98.6% |
| IMR 4831 | <<locked>> | 94% | 53,113 psi | 90% | 2733 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 51,663 psi | 88% | 2694 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 52,663 psi | 90% | 2657 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 52,040 psi | 89% | 2667 fps | 99.5% |
| Lovex S070 | <<locked>> | 90% | 50,038 psi | 85% | 2657 fps | 98.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,829 psi | 71% | 2546 fps | 97.7% |
| Norma 203B | <<locked>> | 84% | 52,895 psi | 90% | 2703 fps | 100% |
| Norma 204 | <<locked>> | 92% | 51,416 psi | 88% | 2717 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 53,084 psi | 90% | 2848 fps | 99% |
| Norma URP | <<locked>> | 92% | 51,706 psi | 88% | 2730 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 82% | 49,980 psi | 85% | 2677 fps | 100% |
| Ramshot Hunter | <<locked>> | 92% | 50,285 psi | 86% | 2723 fps | 99.1% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 43,453 psi | 74% | 2628 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,927 psi | 63% | 1716 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 51,126 psi | 87% | 2657 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 50,531 psi | 86% | 2762 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 52,359 psi | 89% | 2762 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 51,068 psi | 87% | 2785 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 82% | 51,416 psi | 88% | 2621 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 50,705 psi | 86% | 2657 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 52,170 psi | 89% | 2700 fps | 96.2% |
| Rottweil R 905 | <<locked>> | 98% | 52,127 psi | 89% | 2753 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 88% | 50,575 psi | 86% | 2644 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 90% | 52,040 psi | 89% | 2667 fps | 99.5% |
| Shooters World Precision | <<locked>> | 84% | 52,663 psi | 90% | 2657 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 50,038 psi | 85% | 2657 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 52,112 psi | 89% | 2713 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 52,170 psi | 89% | 2556 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 51,634 psi | 88% | 2621 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 51,648 psi | 88% | 2749 fps | 97.6% |
| Somchem S355 | <<locked>> | 86% | 50,966 psi | 87% | 2654 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 50,488 psi | 86% | 2733 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 52,794 psi | 90% | 2733 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 82% | 51,445 psi | 88% | 2582 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 51,706 psi | 88% | 2595 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 51,953 psi | 88% | 2631 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 50,357 psi | 86% | 2674 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,559 psi | 83% | 2651 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 82% | 49,937 psi | 85% | 2592 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 52,707 psi | 90% | 2726 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,678 psi | 90% | 2782 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 49,647 psi | 85% | 2644 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 51,750 psi | 88% | 2740 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,351 psi | 72% | 2753 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,852 psi | 90% | 2723 fps | 97.5% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 48,921 psi | 83% | 2549 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,876 psi | 80% | 2546 fps | 97.1% |
| Accurate 3100 | <<locked>> | 88% | 33,446 psi | 57% | 2372 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 46,282 psi | 79% | 2556 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,940 psi | 59% | 2418 fps | 97.4% |
| Accurate High Country | <<locked>> | 96% | 47,601 psi | 81% | 2756 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 44,077 psi | 75% | 2530 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 44,208 psi | 75% | 2612 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,993 psi | 82% | 2726 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,396 psi | 76% | 2552 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,369 psi | 81% | 2615 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,374 psi | 59% | 2428 fps | 97.5% |
| Alliant Reloder-17 | 47.1 gr | 80% | 38,711 psi | 66% | 2549 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,743 psi | 74% | 2605 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 43,932 psi | 75% | 2654 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,745 psi | 46% | 2244 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,287 psi | 58% | 2464 fps | 95.8% |
| Alliant Reloder-26 | 51.9 gr | 86% | 32,634 psi | 56% | 2467 fps | 96.1% |
| Bofors RP15 | <<locked>> | 98% | 43,047 psi | 73% | 2638 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 44,454 psi | 76% | 2562 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 43,932 psi | 75% | 2654 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 39,436 psi | 67% | 2438 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 44,962 psi | 77% | 2572 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 37,043 psi | 63% | 2464 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 82% | 42,627 psi | 73% | 2536 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,865 psi | 54% | 2329 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,834 psi | 83% | 2661 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 38,493 psi | 66% | 2523 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,992 psi | 46% | 1493 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,354 psi | 79% | 2562 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,472 psi | 83% | 2582 fps | 98.1% |
| IMR 4350 | <<locked>> | 84% | 39,900 psi | 68% | 2470 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,857 psi | 70% | 2470 fps | 96.3% |
| IMR 4831 | <<locked>> | 80% | 33,707 psi | 57% | 2375 fps | 97.1% |
| IMR 4895 | <<locked>> | 80% | 48,573 psi | 83% | 2644 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,528 psi | 79% | 2562 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,276 psi | 65% | 2418 fps | 97% |
| Lovex S070 | <<locked>> | 80% | 36,506 psi | 62% | 2398 fps | 95.2% |
| Lovex S071 | <<locked>> | 94% | 34,476 psi | 59% | 2395 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 46,717 psi | 80% | 2605 fps | 100% |
| Norma 204 | <<locked>> | 88% | 44,976 psi | 77% | 2608 fps | 95.6% |
| Norma MRP | <<locked>> | 90% | 37,652 psi | 64% | 2552 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 34,911 psi | 59% | 2415 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 80% | 46,688 psi | 79% | 2621 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 80% | 33,953 psi | 58% | 2402 fps | 95% |
| Ramshot Magnum | <<locked>> | 98% | 40,393 psi | 69% | 2562 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,485 psi | 47% | 1529 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,005 psi | 77% | 2552 fps | 98% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,191 psi | 70% | 2602 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,490 psi | 59% | 2431 fps | 96.9% |
| ReloadSwiss RS 70 | 47.8 gr | 80% | 33,866 psi | 58% | 2434 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 80% | 48,356 psi | 82% | 2572 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,814 psi | 71% | 2510 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 48,965 psi | 83% | 2644 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 92% | 42,627 psi | 73% | 2585 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 39,436 psi | 67% | 2438 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,276 psi | 65% | 2418 fps | 97% |
| Shooters World Precision | <<locked>> | 80% | 46,528 psi | 79% | 2562 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,506 psi | 62% | 2398 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,917 psi | 73% | 2562 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,337 psi | 74% | 2428 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,507 psi | 64% | 2365 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 42,221 psi | 72% | 2582 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 42,264 psi | 72% | 2510 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 31,328 psi | 53% | 2372 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 40,567 psi | 69% | 2516 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 48,196 psi | 82% | 2536 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,573 psi | 83% | 2552 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,292 psi | 69% | 2444 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,303 psi | 62% | 2415 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 96% | 42,728 psi | 73% | 2549 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 46,963 psi | 80% | 2549 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,839 psi | 61% | 2418 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 82% | 29,167 psi | 50% | 2316 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,534 psi | 60% | 2388 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 37,043 psi | 63% | 2464 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,179 psi | 43% | 2267 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 94% | 42,815 psi | 73% | 2556 fps | 95.1% |
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 78 powders for .280 Rem. loaded with the .284 | 160gr | Speer Magnum Tip Soft Point. Norma MRP delivers the highest muzzle velocity at 2,848 fps; across all powders the maximum-charge window runs from 1,673 fps to 2,848 fps. Accurate 3100 gives the best case fill at 100 %, and 78 of the 78 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 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. ReloadSwiss RS 70, Alliant Reloder-26, Alliant Reloder-17 rank at the top here: for .280 Rem. with the .284 | 160gr | Speer Magnum Tip Soft Point 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.