Load Specifications
Load data in caliber .280 Rem. with .284 | 160gr | Barnes MRX BT bullet and 84 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 Hodgdon Superformance.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 49,893 psi | 85% | 2572 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 51,895 psi | 88% | 2631 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,993 psi | 82% | 2657 fps | 98.8% |
| Accurate 4064 | <<locked>> | 84% | 50,372 psi | 86% | 2621 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 50,343 psi | 86% | 2713 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 52,678 psi | 90% | 2848 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 86% | 51,459 psi | 88% | 2654 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 52,185 psi | 89% | 2753 fps | 97.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 50,038 psi | 85% | 2762 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 51,648 psi | 88% | 2674 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 52,054 psi | 89% | 2694 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 51,880 psi | 88% | 2772 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 52,866 psi | 90% | 2799 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 51,358 psi | 87% | 2743 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,124 psi | 82% | 2733 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,368 psi | 77% | 2680 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,624 psi | 67% | 2595 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,779 psi | 88% | 2864 fps | 100% |
| Bofors RP3 | <<locked>> | 86% | 52,040 psi | 89% | 2687 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,124 psi | 82% | 2733 fps | 96.8% |
| Bofors RP7 | <<locked>> | 90% | 52,069 psi | 89% | 2671 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 86% | 53,011 psi | 90% | 2707 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 49,647 psi | 85% | 2710 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 88% | 50,256 psi | 86% | 2677 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 51,793 psi | 88% | 2700 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 50,488 psi | 86% | 2690 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 49,545 psi | 84% | 2743 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,897 psi | 61% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 51,764 psi | 88% | 2657 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 50,821 psi | 87% | 2638 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 50,241 psi | 86% | 2615 fps | 98.4% |
| IMR 4350 | <<locked>> | 94% | 52,910 psi | 90% | 2703 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 50,589 psi | 86% | 2648 fps | 98.4% |
| IMR 4831 | <<locked>> | 94% | 51,198 psi | 87% | 2707 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 50,125 psi | 85% | 2671 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,620 psi | 90% | 2625 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 50,763 psi | 86% | 2631 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 50,212 psi | 85% | 2644 fps | 99.3% |
| Lovex S070 | <<locked>> | 92% | 51,343 psi | 87% | 2684 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,769 psi | 68% | 2513 fps | 97.1% |
| Norma 201 | <<locked>> | 82% | 52,156 psi | 89% | 2641 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,750 psi | 90% | 2641 fps | 100% |
| Norma 203B | <<locked>> | 84% | 51,329 psi | 87% | 2684 fps | 100% |
| Norma 204 | <<locked>> | 92% | 49,763 psi | 85% | 2694 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 50,952 psi | 87% | 2818 fps | 98.6% |
| Norma URP | <<locked>> | 92% | 49,864 psi | 85% | 2703 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 51,721 psi | 88% | 2707 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 52,083 psi | 89% | 2756 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,564 psi | 62% | 1709 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,910 psi | 90% | 2690 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 52,750 psi | 90% | 2759 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 52,402 psi | 89% | 2792 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 50,386 psi | 86% | 2736 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,069 psi | 90% | 2818 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 52,707 psi | 90% | 2641 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 52,228 psi | 89% | 2684 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 50,531 psi | 86% | 2674 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 98% | 50,357 psi | 86% | 2726 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 90% | 52,069 psi | 89% | 2671 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 50,212 psi | 85% | 2644 fps | 99.3% |
| Shooters World Precision | <<locked>> | 84% | 50,763 psi | 86% | 2631 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 51,343 psi | 87% | 2684 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 50,633 psi | 86% | 2697 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 52,083 psi | 89% | 2674 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 50,778 psi | 86% | 2543 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 49,879 psi | 85% | 2598 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,879 psi | 85% | 2720 fps | 97.2% |
| Somchem S335 | <<locked>> | 82% | 52,939 psi | 90% | 2579 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 52,576 psi | 90% | 2684 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 51,924 psi | 88% | 2756 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 50,923 psi | 87% | 2707 fps | 98.1% |
| Vihtavuori N135 | <<locked>> | 84% | 53,142 psi | 90% | 2608 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 50,212 psi | 85% | 2579 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 50,444 psi | 86% | 2615 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 51,837 psi | 88% | 2697 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,862 psi | 80% | 2625 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 84% | 51,590 psi | 88% | 2618 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 51,169 psi | 87% | 2707 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,604 psi | 86% | 2753 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 51,517 psi | 88% | 2671 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 49,951 psi | 85% | 2713 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,611 psi | 69% | 2720 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 52,011 psi | 89% | 2680 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,155 psi | 87% | 2700 fps | 97.1% |
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% | 46,644 psi | 79% | 2523 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,484 psi | 77% | 2526 fps | 96.7% |
| Accurate 3100 | <<locked>> | 90% | 33,765 psi | 57% | 2385 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 44,179 psi | 75% | 2530 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,127 psi | 56% | 2382 fps | 96.8% |
| Accurate High Country | <<locked>> | 98% | 49,226 psi | 84% | 2789 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,728 psi | 73% | 2510 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 94% | 45,788 psi | 78% | 2644 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,557 psi | 79% | 2703 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,844 psi | 73% | 2530 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,803 psi | 78% | 2592 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,040 psi | 56% | 2398 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,289 psi | 63% | 2523 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,165 psi | 77% | 2635 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 96% | 42,221 psi | 72% | 2625 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,093 psi | 46% | 2260 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 94% | 32,779 psi | 56% | 2428 fps | 95% |
| Alliant Reloder-26 | 51.4 gr | 86% | 30,966 psi | 53% | 2425 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 42,685 psi | 73% | 2536 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 42,221 psi | 72% | 2625 fps | 95.1% |
| Bofors RP7 | <<locked>> | 82% | 40,321 psi | 69% | 2461 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 43,120 psi | 73% | 2543 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 82% | 38,014 psi | 65% | 2490 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 82% | 41,263 psi | 70% | 2513 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,414 psi | 52% | 2297 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,340 psi | 81% | 2641 fps | 100% |
| Hodgdon Superformance | 51.8 gr | 84% | 39,885 psi | 68% | 2559 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,832 psi | 46% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,559 psi | 83% | 2608 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,933 psi | 76% | 2539 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,181 psi | 80% | 2562 fps | 97.8% |
| IMR 4350 | <<locked>> | 86% | 41,104 psi | 70% | 2500 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,378 psi | 67% | 2441 fps | 95.8% |
| IMR 4831 | <<locked>> | 80% | 32,155 psi | 55% | 2346 fps | 96.5% |
| IMR 4895 | <<locked>> | 80% | 46,992 psi | 80% | 2621 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,734 psi | 85% | 2582 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,918 psi | 76% | 2539 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,767 psi | 63% | 2392 fps | 96.5% |
| Lovex S070 | <<locked>> | 82% | 37,318 psi | 64% | 2421 fps | 95.5% |
| Lovex S071 | <<locked>> | 96% | 34,838 psi | 59% | 2411 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 48,921 psi | 83% | 2592 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,763 psi | 85% | 2598 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,136 psi | 77% | 2579 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 43,366 psi | 74% | 2579 fps | 95% |
| Norma MRP | <<locked>> | 92% | 38,653 psi | 66% | 2579 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 33,431 psi | 57% | 2385 fps | 96.7% |
| Ramshot Big Game | <<locked>> | 80% | 45,223 psi | 77% | 2602 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 34,751 psi | 59% | 2425 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,267 psi | 46% | 1526 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,555 psi | 74% | 2530 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,081 psi | 84% | 2700 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,726 psi | 68% | 2579 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,909 psi | 56% | 2398 fps | 96.3% |
| ReloadSwiss RS 70 | 47.4 gr | 80% | 32,547 psi | 55% | 2402 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 46,644 psi | 79% | 2549 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,074 psi | 68% | 2484 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 47,326 psi | 81% | 2618 fps | 95% |
| Rottweil R 905 | <<locked>> | 94% | 44,005 psi | 75% | 2615 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 82% | 40,321 psi | 69% | 2461 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,767 psi | 63% | 2392 fps | 96.5% |
| Shooters World Precision | <<locked>> | 80% | 44,918 psi | 76% | 2539 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 37,318 psi | 64% | 2421 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,220 psi | 70% | 2536 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,631 psi | 83% | 2618 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,206 psi | 72% | 2415 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,464 psi | 65% | 2392 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 43,584 psi | 74% | 2612 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 49,734 psi | 85% | 2536 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,640 psi | 69% | 2484 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 29,805 psi | 51% | 2339 fps | 98.7% |
| Somchem S385 | <<locked>> | 90% | 39,030 psi | 66% | 2490 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 46,775 psi | 80% | 2520 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,094 psi | 80% | 2533 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,812 psi | 66% | 2421 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 34,838 psi | 59% | 2388 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 96% | 41,031 psi | 70% | 2520 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 45,223 psi | 77% | 2523 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,127 psi | 58% | 2385 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 82% | 27,499 psi | 47% | 2277 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,272 psi | 58% | 2365 fps | 98.9% |
| Winchester 760 | <<locked>> | 82% | 38,014 psi | 65% | 2490 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 86% | 25,411 psi | 43% | 2280 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,530 psi | 83% | 2625 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 44,353 psi | 76% | 2585 fps | 95.5% |
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 100 powders for .280 Rem. loaded with the .284 | 160gr | Barnes MRX BT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,667 fps to 2,864 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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, Hodgdon Superformance rank at the top here: for .280 Rem. with the .284 | 160gr | Barnes MRX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Baschieri & Pellagri 109, Hodgdon H1000 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.