Load Specifications
Load data in caliber .280 Rem. with .284 | 175gr | Sierra MatchKing bullet and 87 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 Alliant Reloder-16.
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% | 52,982 psi | 90% | 2470 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 50,763 psi | 86% | 2484 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,734 psi | 86% | 2569 fps | 99.5% |
| Accurate 4064 | <<locked>> | 82% | 50,096 psi | 85% | 2480 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 49,719 psi | 85% | 2566 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 51,692 psi | 88% | 2700 fps | 97.2% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 52,446 psi | 89% | 2697 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 84% | 50,430 psi | 86% | 2507 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 50,894 psi | 87% | 2605 fps | 97.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,040 psi | 89% | 2648 fps | 96.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 52,083 psi | 89% | 2657 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 50,691 psi | 86% | 2523 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 51,024 psi | 87% | 2543 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 50,778 psi | 86% | 2618 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 51,488 psi | 88% | 2641 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 50,270 psi | 86% | 2595 fps | 97.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,589 psi | 86% | 2648 fps | 98% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,819 psi | 81% | 2589 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,640 psi | 71% | 2516 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 50,502 psi | 86% | 2710 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,325 psi | 79% | 2575 fps | 97% |
| Bofors RP3 | <<locked>> | 84% | 51,155 psi | 87% | 2536 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,589 psi | 86% | 2648 fps | 98% |
| Bofors RP7 | <<locked>> | 88% | 51,024 psi | 87% | 2523 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 84% | 51,692 psi | 88% | 2552 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 52,199 psi | 89% | 2618 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 88% | 52,301 psi | 89% | 2579 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 98% | 51,938 psi | 88% | 2595 fps | 96% |
| Hodgdon H4831 SC | <<locked>> | 98% | 50,981 psi | 87% | 2582 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 50,908 psi | 87% | 2552 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,692 psi | 90% | 2582 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 51,793 psi | 88% | 2648 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 62% | 1578 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,127 psi | 90% | 2536 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 52,141 psi | 89% | 2513 fps | 99.1% |
| IMR 4350 | <<locked>> | 92% | 51,619 psi | 88% | 2556 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 52,605 psi | 90% | 2549 fps | 99.1% |
| IMR 4831 | <<locked>> | 92% | 50,546 psi | 86% | 2566 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 52,315 psi | 89% | 2566 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 50,676 psi | 86% | 2543 fps | 96% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 49,298 psi | 84% | 2618 fps | 96.2% |
| Lovex S062 | <<locked>> | 84% | 52,953 psi | 90% | 2523 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 52,591 psi | 90% | 2546 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 50,444 psi | 86% | 2536 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,192 psi | 72% | 2434 fps | 98.4% |
| Norma 203B | <<locked>> | 82% | 50,328 psi | 86% | 2530 fps | 100% |
| Norma 204 | <<locked>> | 92% | 52,127 psi | 89% | 2602 fps | 97.9% |
| Norma MRP | <<locked>> | 98% | 49,951 psi | 85% | 2671 fps | 99% |
| Norma URP | <<locked>> | 92% | 52,069 psi | 89% | 2602 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 50,517 psi | 86% | 2552 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 49,356 psi | 84% | 2628 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 92% | 51,024 psi | 87% | 2608 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 43,874 psi | 75% | 2516 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,869 psi | 63% | 1614 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 51,619 psi | 88% | 2536 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 51,126 psi | 87% | 2635 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 52,953 psi | 90% | 2641 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 51,474 psi | 88% | 2661 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 40,422 psi | 69% | 2530 fps | 96.9% |
| Rottweil R 902 | <<locked>> | 82% | 51,735 psi | 88% | 2490 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 51,343 psi | 87% | 2533 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 52,794 psi | 90% | 2579 fps | 97% |
| Rottweil R 905 | <<locked>> | 98% | 52,837 psi | 90% | 2635 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 51,024 psi | 87% | 2523 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 52,591 psi | 90% | 2546 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 52,953 psi | 90% | 2523 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 50,444 psi | 86% | 2536 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 52,808 psi | 90% | 2589 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 52,678 psi | 90% | 2431 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 52,112 psi | 89% | 2503 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 52,359 psi | 89% | 2631 fps | 98.2% |
| Somchem S355 | <<locked>> | 86% | 51,474 psi | 88% | 2533 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 51,140 psi | 87% | 2608 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 49,879 psi | 85% | 2559 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 82% | 51,924 psi | 88% | 2454 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 52,199 psi | 89% | 2470 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 52,808 psi | 90% | 2510 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 50,879 psi | 87% | 2549 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,139 psi | 84% | 2536 fps | 98% |
| Vihtavuori N540 | <<locked>> | 82% | 50,372 psi | 86% | 2467 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 50,198 psi | 85% | 2559 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 49,980 psi | 85% | 2612 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 50,517 psi | 86% | 2657 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 50,169 psi | 85% | 2523 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 52,199 psi | 89% | 2618 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,873 psi | 73% | 2638 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 49,705 psi | 85% | 2552 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% | 49,472 psi | 84% | 2425 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,558 psi | 81% | 2434 fps | 97.8% |
| Accurate 3100 | <<locked>> | 86% | 31,691 psi | 54% | 2224 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 46,862 psi | 80% | 2431 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,331 psi | 60% | 2313 fps | 98.2% |
| Accurate High Country | <<locked>> | 94% | 45,034 psi | 77% | 2589 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 98% | 48,979 psi | 83% | 2638 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 44,498 psi | 76% | 2411 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 42,105 psi | 72% | 2451 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 98% | 48,602 psi | 83% | 2592 fps | 95.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,675 psi | 83% | 2605 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,976 psi | 77% | 2438 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,761 psi | 81% | 2493 fps | 100% |
| Alliant Reloder-16 | 41.1 gr | 80% | 34,795 psi | 59% | 2323 fps | 98.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,189 psi | 67% | 2434 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 41,524 psi | 71% | 2444 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 41,568 psi | 71% | 2490 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,440 psi | 43% | 2103 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 90% | 30,661 psi | 52% | 2260 fps | 95% |
| Alliant Reloder-26 | 46.5 gr | 82% | 28,718 psi | 49% | 2251 fps | 95% |
| Bofors RP15 | <<locked>> | 96% | 40,785 psi | 69% | 2470 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 44,947 psi | 77% | 2444 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 41,568 psi | 71% | 2490 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 39,900 psi | 68% | 2329 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 80% | 45,527 psi | 78% | 2454 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 37,333 psi | 64% | 2352 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 80% | 40,480 psi | 69% | 2375 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 96% | 48,834 psi | 83% | 2546 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 47,645 psi | 81% | 2526 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,445 psi | 55% | 2231 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,342 psi | 84% | 2536 fps | 100% |
| Hodgdon Superformance | <<locked>> | 80% | 36,245 psi | 62% | 2359 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,050 psi | 46% | 1407 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,818 psi | 80% | 2441 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,182 psi | 84% | 2470 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 37,942 psi | 65% | 2313 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,104 psi | 70% | 2356 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 34,287 psi | 58% | 2274 fps | 97.9% |
| IMR 4895 | <<locked>> | 80% | 48,965 psi | 83% | 2520 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 47,805 psi | 81% | 2497 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 98% | 46,340 psi | 79% | 2566 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 46,978 psi | 80% | 2438 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,711 psi | 66% | 2313 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 36,985 psi | 63% | 2297 fps | 96.2% |
| Lovex S071 | <<locked>> | 92% | 32,692 psi | 56% | 2247 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 47,137 psi | 80% | 2480 fps | 100% |
| Norma 204 | <<locked>> | 86% | 42,554 psi | 72% | 2441 fps | 95.7% |
| Norma MRP | 48.5 gr | 88% | 35,694 psi | 61% | 2395 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 35,433 psi | 60% | 2310 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 47,311 psi | 81% | 2503 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 45,992 psi | 78% | 2572 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 34,243 psi | 58% | 2297 fps | 96% |
| Ramshot Magnum | <<locked>> | 96% | 38,145 psi | 65% | 2405 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,601 psi | 47% | 1440 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,353 psi | 77% | 2438 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,640 psi | 71% | 2484 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,157 psi | 60% | 2333 fps | 97.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 34,345 psi | 58% | 2336 fps | 97.1% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 37,826 psi | 64% | 2470 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 48,718 psi | 83% | 2448 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,424 psi | 72% | 2395 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 46,456 psi | 79% | 2480 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 90% | 40,596 psi | 69% | 2428 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 39,900 psi | 68% | 2329 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,711 psi | 66% | 2313 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 46,978 psi | 80% | 2438 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,985 psi | 63% | 2297 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,279 psi | 74% | 2444 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,816 psi | 75% | 2310 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,855 psi | 64% | 2260 fps | 96.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 40,205 psi | 68% | 2421 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 42,743 psi | 73% | 2395 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 31,865 psi | 54% | 2270 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 36,143 psi | 62% | 2313 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 48,805 psi | 83% | 2411 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,168 psi | 84% | 2428 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,857 psi | 70% | 2333 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,680 psi | 62% | 2306 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 37,927 psi | 65% | 2339 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 47,485 psi | 81% | 2428 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,318 psi | 62% | 2313 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 80% | 27,702 psi | 47% | 2172 fps | 96.1% |
| Vihtavuori N560 | <<locked>> | 96% | 47,282 psi | 80% | 2602 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,042 psi | 61% | 2287 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 37,565 psi | 64% | 2359 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 23,902 psi | 41% | 2126 fps | 95.5% |
| Winchester Supreme 780 | <<locked>> | 92% | 40,625 psi | 69% | 2398 fps | 95.2% |
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 87 powders for .280 Rem. loaded with the .284 | 175gr | Sierra MatchKing. Alliant Reloder-26 delivers the highest muzzle velocity at 2,710 fps; across all powders the maximum-charge window runs from 1,578 fps to 2,710 fps. Accurate 3100 gives the best case fill at 100 %, and 87 of the 87 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 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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, Alliant Reloder-16 rank at the top here: for .280 Rem. with the .284 | 175gr | Sierra MatchKing 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.