Load Specifications
Load data in caliber .280 Rem. with .284 | 175gr | A-Square MONO RN bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Vihtavuori N560.
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 3100 | <<locked>> | 96% | 50,633 psi | 86% | 2598 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 52,576 psi | 90% | 2635 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 52,547 psi | 89% | 2730 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 82% | 51,880 psi | 88% | 2559 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 50,111 psi | 85% | 2631 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 96% | 50,952 psi | 87% | 2677 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,637 psi | 64% | 2477 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 52,663 psi | 90% | 2582 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 50,270 psi | 86% | 2641 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 50,879 psi | 87% | 2654 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 52,765 psi | 90% | 2671 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 96% | 50,343 psi | 86% | 2674 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 51,039 psi | 87% | 2661 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,152 psi | 80% | 2654 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 50,821 psi | 87% | 2740 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,692 psi | 90% | 2713 fps | 98.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,221 psi | 74% | 2585 fps | 96.3% |
| Bofors RP5 | <<locked>> | 96% | 50,343 psi | 86% | 2674 fps | 98.5% |
| Bofors RP7 | <<locked>> | 86% | 52,721 psi | 90% | 2589 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,731 psi | 80% | 2598 fps | 97.2% |
| Hodgdon H414 | <<locked>> | 86% | 51,256 psi | 87% | 2635 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 84% | 50,865 psi | 87% | 2595 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 94% | 51,155 psi | 87% | 2625 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 94% | 50,053 psi | 85% | 2608 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 50,531 psi | 86% | 2575 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,369 psi | 79% | 2697 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 86% | 50,720 psi | 86% | 2664 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,709 psi | 62% | 1627 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 50,444 psi | 86% | 2572 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 84% | 51,097 psi | 87% | 2566 fps | 99.3% |
| IMR 4831 | <<locked>> | 90% | 52,982 psi | 90% | 2628 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,736 psi | 90% | 2615 fps | 97.2% |
| IMR 7828 SSC | <<locked>> | 98% | 52,011 psi | 89% | 2707 fps | 97.7% |
| Lovex S065 | <<locked>> | 86% | 51,198 psi | 87% | 2562 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 52,649 psi | 90% | 2605 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,356 psi | 82% | 2562 fps | 99.6% |
| Norma 204 | <<locked>> | 88% | 50,879 psi | 87% | 2618 fps | 98.2% |
| Norma MRP | <<locked>> | 94% | 49,734 psi | 85% | 2697 fps | 99.4% |
| Norma URP | <<locked>> | 88% | 51,605 psi | 88% | 2625 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 52,475 psi | 89% | 2726 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 88% | 50,154 psi | 85% | 2625 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,314 psi | 86% | 2664 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,492 psi | 64% | 1667 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 50,183 psi | 85% | 2644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 52,446 psi | 89% | 2657 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 50,734 psi | 86% | 2680 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,151 psi | 79% | 2690 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 82% | 50,357 psi | 86% | 2549 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 51,677 psi | 88% | 2605 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 94% | 52,141 psi | 89% | 2657 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 86% | 52,721 psi | 90% | 2589 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 51,198 psi | 87% | 2562 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 52,649 psi | 90% | 2605 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 51,634 psi | 88% | 2602 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 51,126 psi | 87% | 2444 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 50,444 psi | 86% | 2516 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 51,706 psi | 88% | 2654 fps | 98.7% |
| Somchem S355 | <<locked>> | 82% | 50,212 psi | 85% | 2543 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,040 psi | 90% | 2598 fps | 97% |
| Somchem S365 | <<locked>> | 90% | 50,966 psi | 87% | 2628 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 52,678 psi | 90% | 2635 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 84% | 51,213 psi | 87% | 2520 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 49,893 psi | 85% | 2566 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 52,083 psi | 89% | 2615 fps | 99% |
| Vihtavuori N550 | <<locked>> | 88% | 52,388 psi | 89% | 2621 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 50,444 psi | 86% | 2641 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 49,995 psi | 85% | 2687 fps | 96.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,356 psi | 84% | 2664 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 52,475 psi | 89% | 2582 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 51,256 psi | 87% | 2635 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,459 psi | 86% | 2779 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 52,591 psi | 90% | 2628 fps | 98.6% |
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 3100 | <<locked>> | 82% | 31,691 psi | 54% | 2241 fps | 95.9% |
| Accurate 4350 | <<locked>> | 80% | 40,132 psi | 68% | 2431 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 92% | 45,672 psi | 78% | 2612 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 48,617 psi | 83% | 2510 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 38,638 psi | 66% | 2415 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 92% | 44,831 psi | 76% | 2566 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 98% | 35,317 psi | 60% | 2418 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,356 psi | 84% | 2533 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,841 psi | 66% | 2441 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,135 psi | 75% | 2549 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,479 psi | 66% | 2411 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,711 psi | 66% | 2461 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,645 psi | 49% | 2221 fps | 98.2% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,429 psi | 52% | 2283 fps | 95.8% |
| Alliant Reloder-26 | 50.5 gr | 80% | 30,560 psi | 52% | 2326 fps | 96.8% |
| Bofors RP15 | <<locked>> | 90% | 38,203 psi | 65% | 2448 fps | 95.3% |
| Bofors RP30 | <<locked>> | 98% | 40,422 psi | 69% | 2530 fps | 95.4% |
| Bofors RP5 | <<locked>> | 88% | 38,711 psi | 66% | 2461 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 43,642 psi | 74% | 2438 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 96% | 41,031 psi | 70% | 2487 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 41,843 psi | 71% | 2470 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 44,730 psi | 76% | 2490 fps | 97.5% |
| Hodgdon H4831 | <<locked>> | 90% | 44,715 psi | 76% | 2516 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 92% | 47,050 psi | 80% | 2556 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,477 psi | 62% | 2339 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 94% | 38,087 psi | 65% | 2516 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 40,756 psi | 69% | 2487 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,383 psi | 47% | 1450 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,436 psi | 67% | 2375 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,991 psi | 77% | 2461 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 38,421 psi | 65% | 2385 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 88% | 43,787 psi | 75% | 2461 fps | 95% |
| IMR 7828 SSC | <<locked>> | 92% | 42,786 psi | 73% | 2539 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 42,714 psi | 73% | 2421 fps | 99.1% |
| Lovex S070 | <<locked>> | 80% | 40,944 psi | 70% | 2405 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 30,980 psi | 53% | 2224 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 38,754 psi | 66% | 2398 fps | 95.2% |
| Norma MRP | 50.3 gr | 82% | 33,069 psi | 56% | 2356 fps | 95% |
| Norma URP | <<locked>> | 80% | 39,726 psi | 68% | 2425 fps | 99.4% |
| Ramshot Grand | <<locked>> | 92% | 42,351 psi | 72% | 2543 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 38,406 psi | 65% | 2411 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 35,157 psi | 60% | 2375 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,934 psi | 48% | 1483 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,847 psi | 80% | 2592 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,929 psi | 68% | 2451 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,479 psi | 66% | 2457 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 35,070 psi | 60% | 2441 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 47,123 psi | 80% | 2500 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,670 psi | 73% | 2448 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 37,594 psi | 64% | 2395 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 43,642 psi | 74% | 2438 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,714 psi | 73% | 2421 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 80% | 40,944 psi | 70% | 2405 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,124 psi | 82% | 2549 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,138 psi | 82% | 2402 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,698 psi | 71% | 2369 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,246 psi | 63% | 2388 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 47,297 psi | 81% | 2497 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 46,543 psi | 79% | 2493 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 36,390 psi | 62% | 2385 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 35,766 psi | 61% | 2329 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 45,136 psi | 77% | 2431 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,104 psi | 70% | 2421 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 88% | 37,536 psi | 64% | 2362 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 40,437 psi | 69% | 2421 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 31,836 psi | 54% | 2290 fps | 98.2% |
| Vihtavuori N560 | 55.2 gr | 90% | 43,801 psi | 75% | 2572 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 96% | 42,888 psi | 73% | 2549 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,059 psi | 68% | 2392 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,076 psi | 72% | 2477 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,222 psi | 43% | 2205 fps | 97.6% |
| Winchester Supreme 780 | <<locked>> | 88% | 40,001 psi | 68% | 2418 fps | 95.9% |
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 | A-Square MONO RN. Winchester StaBALL HD delivers the highest muzzle velocity at 2,779 fps; across all powders the maximum-charge window runs from 1,627 fps to 2,779 fps. ADI AR 2217 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 57–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.284" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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, Norma MRP, Vihtavuori N560 rank at the top here: for .280 Rem. with the .284 | 175gr | A-Square MONO RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, IMR 8133 Enduron, Norma 217 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.