Load Specifications
Load data in caliber .280 Rem. with .284 | 175gr | Barnes X S bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country and Norma MRP.
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 2700 | <<locked>> | 82% | 52,939 psi | 90% | 2490 fps | 98.5% |
| Accurate 3100 | <<locked>> | 98% | 50,647 psi | 86% | 2543 fps | 99.4% |
| Accurate 4350 | <<locked>> | 90% | 52,997 psi | 90% | 2585 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 50,894 psi | 87% | 2661 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 52,301 psi | 89% | 2510 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 52,895 psi | 90% | 2612 fps | 98% |
| ADI AR 2213 | <<locked>> | 98% | 50,778 psi | 86% | 2605 fps | 96.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 53,040 psi | 90% | 2612 fps | 98% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 53,040 psi | 90% | 2612 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 50,299 psi | 86% | 2493 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 52,968 psi | 90% | 2628 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 50,488 psi | 86% | 2605 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 52,344 psi | 89% | 2605 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,779 psi | 90% | 2657 fps | 98.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,053 psi | 85% | 2602 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,135 psi | 75% | 2539 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 53,084 psi | 90% | 2726 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,776 psi | 83% | 2592 fps | 97.3% |
| Bofors RP3 | <<locked>> | 82% | 51,024 psi | 87% | 2507 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,779 psi | 90% | 2657 fps | 98.2% |
| Bofors RP7 | <<locked>> | 86% | 50,415 psi | 86% | 2487 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 82% | 51,155 psi | 87% | 2516 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 88% | 50,952 psi | 87% | 2572 fps | 99% |
| Hodgdon H4350 | <<locked>> | 86% | 51,111 psi | 87% | 2536 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 50,270 psi | 86% | 2520 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,105 psi | 73% | 2562 fps | 96.5% |
| Hodgdon Superformance | <<locked>> | 88% | 50,430 psi | 86% | 2602 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,637 psi | 62% | 1568 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 51,909 psi | 88% | 2493 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 50,589 psi | 86% | 2513 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 51,532 psi | 88% | 2510 fps | 98.9% |
| IMR 4831 | <<locked>> | 92% | 53,069 psi | 90% | 2575 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,649 psi | 90% | 2546 fps | 96.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,619 psi | 88% | 2631 fps | 96.5% |
| Lovex S062 | <<locked>> | 82% | 52,576 psi | 90% | 2493 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 52,083 psi | 89% | 2513 fps | 99.7% |
| Lovex S070 | <<locked>> | 90% | 53,084 psi | 90% | 2549 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,672 psi | 78% | 2464 fps | 98.8% |
| Norma 203B | <<locked>> | 82% | 52,634 psi | 90% | 2539 fps | 100% |
| Norma 204 | <<locked>> | 90% | 50,749 psi | 86% | 2556 fps | 97.4% |
| Norma MRP | <<locked>> | 98% | 52,315 psi | 89% | 2684 fps | 99.2% |
| Norma URP | <<locked>> | 90% | 51,445 psi | 88% | 2569 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 52,823 psi | 90% | 2562 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,938 psi | 88% | 2648 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 90% | 49,937 psi | 85% | 2566 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,383 psi | 79% | 2536 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,565 psi | 64% | 1611 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 50,923 psi | 87% | 2500 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 50,009 psi | 85% | 2595 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 52,112 psi | 89% | 2602 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 50,299 psi | 86% | 2621 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,018 psi | 73% | 2559 fps | 97.5% |
| Rottweil R 903 | <<locked>> | 84% | 51,169 psi | 87% | 2503 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 51,692 psi | 88% | 2539 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 96% | 51,692 psi | 88% | 2592 fps | 98% |
| Rottweil R 907 | <<locked>> | 86% | 50,415 psi | 86% | 2487 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 52,083 psi | 89% | 2513 fps | 99.7% |
| Shooters World Precision | <<locked>> | 82% | 52,576 psi | 90% | 2493 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,084 psi | 90% | 2549 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 51,692 psi | 88% | 2552 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 51,721 psi | 88% | 2395 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 51,634 psi | 88% | 2470 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 51,213 psi | 87% | 2589 fps | 97.9% |
| Somchem S355 | <<locked>> | 84% | 51,010 psi | 87% | 2497 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 52,968 psi | 90% | 2533 fps | 96% |
| Somchem S365 | <<locked>> | 92% | 50,430 psi | 86% | 2575 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 52,562 psi | 89% | 2575 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 86% | 51,764 psi | 88% | 2474 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 50,285 psi | 86% | 2516 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,590 psi | 88% | 2549 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 82% | 52,924 psi | 90% | 2477 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 52,591 psi | 90% | 2569 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 52,924 psi | 90% | 2628 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 52,692 psi | 90% | 2667 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 52,330 psi | 89% | 2530 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 51,300 psi | 87% | 2579 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,716 psi | 78% | 2664 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 52,156 psi | 89% | 2566 fps | 97.8% |
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 2700 | <<locked>> | 80% | 49,792 psi | 85% | 2441 fps | 98.1% |
| Accurate 3100 | <<locked>> | 84% | 32,953 psi | 56% | 2221 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 38,609 psi | 66% | 2349 fps | 98.8% |
| Accurate High Country | 49.7 gr | 92% | 44,599 psi | 76% | 2552 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 46,557 psi | 79% | 2421 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 41,626 psi | 71% | 2415 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 96% | 47,601 psi | 81% | 2549 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 41,800 psi | 71% | 2418 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 41,800 psi | 71% | 2418 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,210 psi | 80% | 2444 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,028 psi | 63% | 2343 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,481 psi | 71% | 2454 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,394 psi | 70% | 2415 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,278 psi | 70% | 2457 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,065 psi | 48% | 2149 fps | 97.2% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,285 psi | 53% | 2247 fps | 95.1% |
| Alliant Reloder-26 | 44.5 gr | 80% | 29,660 psi | 50% | 2247 fps | 95.4% |
| Bofors RP15 | <<locked>> | 94% | 40,799 psi | 69% | 2444 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 48,080 psi | 82% | 2464 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,278 psi | 70% | 2457 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 42,134 psi | 72% | 2343 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 47,964 psi | 82% | 2467 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 39,914 psi | 68% | 2379 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 80% | 42,728 psi | 73% | 2392 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,969 psi | 60% | 2257 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,741 psi | 69% | 2510 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 38,667 psi | 66% | 2385 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,731 psi | 47% | 1404 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,994 psi | 83% | 2448 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 37,797 psi | 64% | 2283 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,207 psi | 74% | 2369 fps | 97.4% |
| IMR 4831 | <<locked>> | 80% | 36,869 psi | 63% | 2300 fps | 98.5% |
| IMR 4955 Enduron | <<locked>> | 94% | 49,734 psi | 85% | 2503 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 98% | 48,370 psi | 82% | 2575 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 49,617 psi | 84% | 2451 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,321 psi | 70% | 2333 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 39,755 psi | 68% | 2320 fps | 96.9% |
| Lovex S071 | <<locked>> | 88% | 32,198 psi | 55% | 2201 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 49,690 psi | 85% | 2493 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,003 psi | 72% | 2405 fps | 95.3% |
| Norma MRP | 46.5 gr | 86% | 36,042 psi | 61% | 2375 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 38,058 psi | 65% | 2339 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 80% | 49,530 psi | 84% | 2513 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 45,368 psi | 77% | 2533 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 36,782 psi | 63% | 2326 fps | 96.7% |
| Ramshot Magnum | <<locked>> | 96% | 40,611 psi | 69% | 2428 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,123 psi | 48% | 1434 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,877 psi | 82% | 2451 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,874 psi | 75% | 2497 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,884 psi | 64% | 2362 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,666 psi | 62% | 2362 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,927 psi | 65% | 2444 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 45,455 psi | 77% | 2418 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 45,687 psi | 78% | 2441 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 88% | 40,408 psi | 69% | 2398 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 42,134 psi | 72% | 2343 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,321 psi | 70% | 2333 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 49,617 psi | 84% | 2451 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,755 psi | 68% | 2320 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,788 psi | 78% | 2461 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,209 psi | 79% | 2320 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,495 psi | 69% | 2283 fps | 96.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,030 psi | 68% | 2392 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 45,469 psi | 77% | 2411 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 49,734 psi | 85% | 2484 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 34,635 psi | 59% | 2303 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 36,738 psi | 63% | 2293 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 43,453 psi | 74% | 2349 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,233 psi | 67% | 2329 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 92% | 40,277 psi | 69% | 2362 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 49,748 psi | 85% | 2434 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,827 psi | 66% | 2336 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 30,806 psi | 52% | 2218 fps | 97.3% |
| Vihtavuori N560 | <<locked>> | 96% | 49,690 psi | 85% | 2618 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,247 psi | 65% | 2303 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 39,914 psi | 68% | 2379 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,222 psi | 43% | 2139 fps | 96.4% |
| Winchester Supreme 780 | <<locked>> | 92% | 42,946 psi | 73% | 2415 fps | 95.7% |
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 | 175gr | Barnes X S. Alliant Reloder-26 delivers the highest muzzle velocity at 2,726 fps; across all powders the maximum-charge window runs from 1,568 fps to 2,726 fps. Alliant Reloder-22 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 175.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-22, Alliant Reloder-23, Alliant Reloder-25 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. Alliant Reloder-26, Accurate High Country, Norma MRP rank at the top here: for .280 Rem. with the .284 | 175gr | Barnes X S 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.