Load Specifications
Load data in caliber .280 Rem. with .285 | 173gr | Prvi Partizan FMJ BT bullet and 81 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 ReloadSwiss RS 70.
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 2700 | <<locked>> | 82% | 52,199 psi | 89% | 2536 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,837 psi | 90% | 2625 fps | 99.7% |
| Accurate 4064 | <<locked>> | 82% | 51,416 psi | 88% | 2523 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 51,648 psi | 88% | 2621 fps | 100% |
| ADI AR 2208 | <<locked>> | 84% | 51,793 psi | 88% | 2552 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 52,562 psi | 89% | 2657 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 98% | 50,328 psi | 86% | 2651 fps | 96.5% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 52,649 psi | 90% | 2657 fps | 98.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 52,649 psi | 90% | 2657 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 52,446 psi | 89% | 2575 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 52,460 psi | 89% | 2592 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 52,591 psi | 90% | 2674 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 49,879 psi | 85% | 2641 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 51,967 psi | 88% | 2651 fps | 98.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,460 psi | 89% | 2703 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,559 psi | 84% | 2641 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,207 psi | 74% | 2575 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 53,040 psi | 90% | 2772 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,124 psi | 82% | 2635 fps | 97.5% |
| Bofors RP3 | <<locked>> | 84% | 52,881 psi | 90% | 2589 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,460 psi | 89% | 2703 fps | 98.4% |
| Bofors RP7 | <<locked>> | 88% | 52,446 psi | 89% | 2575 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 82% | 49,966 psi | 85% | 2552 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 88% | 50,531 psi | 86% | 2618 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 86% | 50,430 psi | 86% | 2579 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 96% | 50,357 psi | 86% | 2598 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,808 psi | 90% | 2638 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 52,707 psi | 90% | 2602 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 42,322 psi | 72% | 2602 fps | 96.7% |
| Hodgdon Superformance | <<locked>> | 88% | 50,024 psi | 85% | 2648 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 62% | 1604 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 51,184 psi | 87% | 2536 fps | 100% |
| IMR 4350 | <<locked>> | 92% | 53,156 psi | 90% | 2605 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 86% | 50,778 psi | 86% | 2549 fps | 99% |
| IMR 4831 | <<locked>> | 92% | 52,301 psi | 89% | 2615 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,214 psi | 89% | 2592 fps | 96.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,358 psi | 87% | 2684 fps | 96.9% |
| Lovex S062 | <<locked>> | 82% | 51,430 psi | 88% | 2530 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 51,039 psi | 87% | 2552 fps | 99.7% |
| Lovex S070 | <<locked>> | 90% | 52,098 psi | 89% | 2589 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,932 psi | 75% | 2487 fps | 98.8% |
| Norma 203B | <<locked>> | 82% | 51,793 psi | 88% | 2579 fps | 100% |
| Norma 204 | <<locked>> | 90% | 50,198 psi | 85% | 2598 fps | 97.6% |
| Norma MRP | <<locked>> | 98% | 52,170 psi | 89% | 2730 fps | 99.3% |
| Norma URP | <<locked>> | 90% | 50,734 psi | 86% | 2608 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 52,373 psi | 89% | 2605 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,314 psi | 87% | 2694 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 92% | 52,837 psi | 90% | 2661 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,876 psi | 78% | 2579 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,130 psi | 63% | 1644 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 49,864 psi | 85% | 2536 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,026 psi | 90% | 2684 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 51,459 psi | 88% | 2644 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 49,835 psi | 85% | 2664 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,105 psi | 72% | 2595 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 86% | 53,026 psi | 90% | 2582 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 51,111 psi | 87% | 2585 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 96% | 51,111 psi | 87% | 2635 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 52,446 psi | 89% | 2575 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 88% | 51,039 psi | 87% | 2552 fps | 99.7% |
| Shooters World Precision | <<locked>> | 82% | 51,430 psi | 88% | 2530 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 52,098 psi | 89% | 2589 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 50,981 psi | 87% | 2589 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 51,010 psi | 87% | 2434 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 50,357 psi | 86% | 2503 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 50,647 psi | 86% | 2631 fps | 98.1% |
| Somchem S355 | <<locked>> | 84% | 49,922 psi | 85% | 2533 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 52,533 psi | 89% | 2579 fps | 96.3% |
| Somchem S365 | <<locked>> | 94% | 53,026 psi | 90% | 2657 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 51,866 psi | 88% | 2615 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 86% | 50,952 psi | 87% | 2513 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 52,620 psi | 90% | 2602 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,966 psi | 87% | 2592 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 82% | 51,938 psi | 88% | 2513 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 51,808 psi | 88% | 2608 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 52,243 psi | 89% | 2667 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 52,576 psi | 90% | 2720 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 52,054 psi | 89% | 2575 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 50,531 psi | 86% | 2618 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,715 psi | 76% | 2697 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 51,590 psi | 88% | 2605 fps | 98% |
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% | 48,762 psi | 83% | 2480 fps | 98.2% |
| Accurate 3100 | <<locked>> | 86% | 32,996 psi | 56% | 2274 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 48,559 psi | 83% | 2480 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,782 psi | 63% | 2362 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 45,643 psi | 78% | 2457 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 40,582 psi | 69% | 2448 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 96% | 47,123 psi | 80% | 2595 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 40,785 psi | 69% | 2451 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 40,785 psi | 69% | 2451 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,180 psi | 79% | 2480 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,240 psi | 84% | 2543 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,042 psi | 61% | 2372 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,698 psi | 69% | 2487 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 40,335 psi | 69% | 2444 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 40,480 psi | 69% | 2490 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,426 psi | 45% | 2156 fps | 96.7% |
| Alliant Reloder-25 | <<locked>> | 90% | 31,604 psi | 54% | 2310 fps | 95.6% |
| Alliant Reloder-26 | 48.5 gr | 82% | 29,907 psi | 51% | 2306 fps | 95.8% |
| Bofors RP15 | <<locked>> | 94% | 39,668 psi | 68% | 2474 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 46,456 psi | 79% | 2493 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 40,480 psi | 69% | 2490 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 40,959 psi | 70% | 2375 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 46,876 psi | 80% | 2503 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 38,841 psi | 66% | 2408 fps | 96.7% |
| Hodgdon H4350 | <<locked>> | 80% | 41,756 psi | 71% | 2425 fps | 96.1% |
| Hodgdon H4831 | <<locked>> | 94% | 47,181 psi | 80% | 2546 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 96% | 49,472 psi | 84% | 2585 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,533 psi | 57% | 2277 fps | 99.1% |
| Hodgdon Retumbo | <<locked>> | 98% | 39,740 psi | 68% | 2543 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 37,608 psi | 64% | 2415 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,166 psi | 46% | 1430 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,022 psi | 82% | 2487 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 36,666 psi | 62% | 2310 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,351 psi | 72% | 2405 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 35,360 psi | 60% | 2320 fps | 98.3% |
| IMR 4955 Enduron | <<locked>> | 92% | 46,122 psi | 79% | 2493 fps | 95% |
| IMR 7828 SSC | <<locked>> | 96% | 44,817 psi | 76% | 2566 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 48,269 psi | 82% | 2484 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,016 psi | 68% | 2362 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 38,072 psi | 65% | 2343 fps | 96.7% |
| Lovex S071 | <<locked>> | 90% | 31,981 psi | 54% | 2251 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 48,617 psi | 83% | 2530 fps | 100% |
| Norma 204 | <<locked>> | 84% | 41,075 psi | 70% | 2438 fps | 95.4% |
| Norma MRP | 49.4 gr | 86% | 34,664 psi | 59% | 2392 fps | 95% |
| Norma URP | <<locked>> | 80% | 36,564 psi | 62% | 2359 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 48,907 psi | 83% | 2552 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 44,498 psi | 76% | 2572 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 35,375 psi | 60% | 2346 fps | 96.5% |
| Ramshot Magnum | <<locked>> | 96% | 39,581 psi | 67% | 2461 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,702 psi | 47% | 1467 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,833 psi | 80% | 2487 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,250 psi | 74% | 2536 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,390 psi | 62% | 2379 fps | 98.2% |
| ReloadSwiss RS 70 | 46.9 gr | 80% | 35,505 psi | 60% | 2385 fps | 97.7% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 36,622 psi | 62% | 2467 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 43,656 psi | 74% | 2441 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 44,976 psi | 77% | 2480 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 88% | 39,218 psi | 67% | 2425 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 40,959 psi | 70% | 2375 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,016 psi | 68% | 2362 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 48,269 psi | 82% | 2484 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,072 psi | 65% | 2343 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,643 psi | 76% | 2490 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,078 psi | 77% | 2352 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,986 psi | 66% | 2306 fps | 96.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 38,856 psi | 66% | 2418 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 44,193 psi | 75% | 2444 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 49,124 psi | 84% | 2523 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 33,156 psi | 56% | 2323 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 37,434 psi | 64% | 2362 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 41,989 psi | 71% | 2375 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,014 psi | 65% | 2356 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 92% | 39,276 psi | 67% | 2392 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 48,820 psi | 83% | 2470 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,550 psi | 64% | 2362 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 28,805 psi | 49% | 2218 fps | 96.7% |
| Vihtavuori N560 | <<locked>> | 94% | 45,992 psi | 78% | 2608 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,188 psi | 63% | 2333 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 38,841 psi | 66% | 2408 fps | 96.7% |
| Winchester StaBALL HD | <<locked>> | 82% | 24,801 psi | 42% | 2182 fps | 96.5% |
| Winchester Supreme 780 | <<locked>> | 92% | 42,148 psi | 72% | 2451 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 81 powders for .280 Rem. loaded with the .285 | 173gr | Prvi Partizan FMJ BT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,772 fps; across all powders the maximum-charge window runs from 1,604 fps to 2,772 fps. Accurate 3100 gives the best case fill at 100 %, and 81 of the 81 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 173.0 gr projectile in 0.285" calls for a 1:12.0 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. Alliant Reloder-26, Norma MRP, ReloadSwiss RS 70 rank at the top here: for .280 Rem. with the .285 | 173gr | Prvi Partizan FMJ BT 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.