Load Specifications
Load data in caliber .280 Rem. with .284 | 183gr | 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 ReloadSwiss RS 70, Alliant Reloder-26 and Alliant Reloder-17.
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% | 52,344 psi | 89% | 2392 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 50,285 psi | 86% | 2405 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,227 psi | 86% | 2493 fps | 99.6% |
| Accurate 4064 | <<locked>> | 84% | 52,721 psi | 90% | 2441 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 52,518 psi | 89% | 2536 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 50,923 psi | 87% | 2618 fps | 97.3% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 51,648 psi | 88% | 2612 fps | 96% |
| ADI AR 2208 | <<locked>> | 86% | 52,852 psi | 90% | 2467 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 50,415 psi | 86% | 2526 fps | 97.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 51,285 psi | 87% | 2566 fps | 96.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 51,648 psi | 88% | 2579 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 50,270 psi | 86% | 2444 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 50,531 psi | 86% | 2464 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 50,241 psi | 86% | 2539 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 51,024 psi | 87% | 2562 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 52,678 psi | 90% | 2562 fps | 98.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,792 psi | 85% | 2566 fps | 98% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,137 psi | 80% | 2510 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,205 psi | 70% | 2444 fps | 99% |
| Alliant Reloder-26 | <<locked>> | 98% | 49,632 psi | 84% | 2628 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 45,730 psi | 78% | 2497 fps | 97% |
| Bofors RP3 | <<locked>> | 84% | 50,879 psi | 87% | 2461 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,792 psi | 85% | 2566 fps | 98% |
| Bofors RP7 | <<locked>> | 88% | 50,546 psi | 86% | 2444 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 84% | 51,169 psi | 87% | 2474 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 51,474 psi | 88% | 2536 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 51,706 psi | 88% | 2497 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 98% | 51,430 psi | 88% | 2516 fps | 96.1% |
| Hodgdon H4831 SC | <<locked>> | 98% | 50,473 psi | 86% | 2503 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 50,386 psi | 86% | 2474 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,127 psi | 89% | 2503 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 50,952 psi | 87% | 2562 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,376 psi | 62% | 1526 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,649 psi | 90% | 2454 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 51,822 psi | 88% | 2438 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 51,227 psi | 87% | 2477 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 52,214 psi | 89% | 2474 fps | 99.2% |
| IMR 4831 | <<locked>> | 94% | 53,026 psi | 90% | 2526 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 51,851 psi | 88% | 2487 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 50,256 psi | 86% | 2464 fps | 96.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 48,878 psi | 83% | 2539 fps | 96.3% |
| Lovex S062 | <<locked>> | 84% | 52,460 psi | 89% | 2448 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 51,938 psi | 88% | 2467 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 52,968 psi | 90% | 2503 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,611 psi | 71% | 2359 fps | 98.4% |
| Norma 203B | <<locked>> | 84% | 53,069 psi | 90% | 2497 fps | 100% |
| Norma 204 | <<locked>> | 92% | 51,256 psi | 87% | 2516 fps | 97.9% |
| Norma MRPᴾ | <<locked>> | 100% | 52,562 psi | 89% | 2638 fps | 99.4% |
| Norma URP | <<locked>> | 92% | 51,517 psi | 88% | 2523 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 50,125 psi | 85% | 2474 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 48,762 psi | 83% | 2549 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 92% | 50,140 psi | 85% | 2523 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 43,178 psi | 74% | 2438 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,956 psi | 63% | 1562 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 51,256 psi | 87% | 2461 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 50,531 psi | 86% | 2552 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 52,141 psi | 89% | 2556 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 50,807 psi | 86% | 2579 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 39,885 psi | 68% | 2454 fps | 97% |
| Rottweil R 902 | <<locked>> | 82% | 51,401 psi | 88% | 2415 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 50,734 psi | 86% | 2454 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 52,257 psi | 89% | 2503 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 98% | 52,054 psi | 89% | 2552 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 50,546 psi | 86% | 2444 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 51,938 psi | 88% | 2467 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 52,460 psi | 89% | 2448 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 52,968 psi | 90% | 2503 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 52,170 psi | 89% | 2510 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 52,533 psi | 89% | 2359 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 51,605 psi | 88% | 2425 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 51,576 psi | 88% | 2546 fps | 98.3% |
| Somchem S355 | <<locked>> | 86% | 51,155 psi | 87% | 2454 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 50,444 psi | 86% | 2526 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 52,707 psi | 90% | 2533 fps | 99% |
| Vihtavuori N135 | <<locked>> | 82% | 51,430 psi | 88% | 2375 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 51,706 psi | 88% | 2392 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 52,025 psi | 89% | 2431 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 50,314 psi | 86% | 2470 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,617 psi | 83% | 2461 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 82% | 50,038 psi | 85% | 2392 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 52,634 psi | 90% | 2523 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,765 psi | 90% | 2575 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 53,156 psi | 90% | 2628 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 49,792 psi | 85% | 2448 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 51,793 psi | 88% | 2539 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,293 psi | 72% | 2559 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,634 psi | 90% | 2523 fps | 98.2% |
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% | 49,008 psi | 83% | 2349 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,978 psi | 80% | 2356 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 31,241 psi | 53% | 2156 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 46,441 psi | 79% | 2356 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,056 psi | 60% | 2244 fps | 98.3% |
| Accurate High Country | <<locked>> | 94% | 44,353 psi | 76% | 2510 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 98% | 48,385 psi | 82% | 2559 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 44,121 psi | 75% | 2336 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 90% | 41,640 psi | 71% | 2375 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 96% | 45,121 psi | 77% | 2461 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,095 psi | 82% | 2523 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,324 psi | 75% | 2356 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,456 psi | 81% | 2418 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,476 psi | 59% | 2251 fps | 98.4% |
| Alliant Reloder-17 | 42.3 gr | 80% | 38,885 psi | 66% | 2365 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 41,060 psi | 70% | 2369 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 38,348 psi | 65% | 2359 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,208 psi | 43% | 2041 fps | 96.2% |
| Alliant Reloder-25 | <<locked>> | 90% | 30,313 psi | 52% | 2192 fps | 95.1% |
| Alliant Reloder-26 | 44.4 gr | 82% | 28,442 psi | 48% | 2185 fps | 95.3% |
| Bofors RP15 | <<locked>> | 96% | 40,292 psi | 69% | 2398 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 44,440 psi | 76% | 2365 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 38,348 psi | 65% | 2359 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 39,378 psi | 67% | 2254 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 80% | 45,092 psi | 77% | 2379 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 36,927 psi | 63% | 2283 fps | 96.3% |
| Hodgdon H4350 | <<locked>> | 80% | 40,045 psi | 68% | 2300 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 96% | 48,211 psi | 82% | 2467 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 47,311 psi | 81% | 2454 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,097 psi | 55% | 2162 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,950 psi | 83% | 2457 fps | 100% |
| Hodgdon Superformance | <<locked>> | 80% | 36,013 psi | 61% | 2293 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,180 psi | 46% | 1362 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,412 psi | 79% | 2365 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,733 psi | 83% | 2392 fps | 98.8% |
| IMR 4350 | <<locked>> | 80% | 35,273 psi | 60% | 2195 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,857 psi | 70% | 2283 fps | 97.2% |
| IMR 4831 | <<locked>> | 80% | 33,765 psi | 57% | 2201 fps | 98% |
| IMR 4895 | <<locked>> | 80% | 48,689 psi | 83% | 2441 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 47,239 psi | 80% | 2418 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 98% | 45,818 psi | 78% | 2490 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 46,586 psi | 79% | 2362 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,392 psi | 65% | 2241 fps | 97.9% |
| Lovex S070 | <<locked>> | 80% | 36,506 psi | 62% | 2224 fps | 96.3% |
| Lovex S071 | <<locked>> | 90% | 30,429 psi | 52% | 2136 fps | 95% |
| Norma 203B | <<locked>> | 80% | 46,862 psi | 80% | 2408 fps | 100% |
| Norma 204 | <<locked>> | 86% | 42,003 psi | 72% | 2365 fps | 95.7% |
| Norma MRP | <<locked>> | 88% | 35,128 psi | 60% | 2320 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 34,925 psi | 59% | 2238 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 80% | 46,775 psi | 80% | 2428 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 45,614 psi | 78% | 2497 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 33,924 psi | 58% | 2228 fps | 96.2% |
| Ramshot Magnum | <<locked>> | 96% | 37,565 psi | 64% | 2329 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,499 psi | 47% | 1391 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,034 psi | 77% | 2362 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,321 psi | 70% | 2411 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,606 psi | 59% | 2257 fps | 97.9% |
| ReloadSwiss RS 70 | 42.9 gr | 80% | 33,924 psi | 58% | 2264 fps | 97.3% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 37,246 psi | 63% | 2395 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 48,298 psi | 82% | 2369 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,800 psi | 71% | 2320 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 46,035 psi | 78% | 2405 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 90% | 40,074 psi | 68% | 2352 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 39,378 psi | 67% | 2254 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,392 psi | 65% | 2241 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 46,586 psi | 79% | 2362 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,506 psi | 62% | 2224 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,917 psi | 73% | 2369 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,598 psi | 74% | 2241 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,608 psi | 64% | 2192 fps | 96.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 39,711 psi | 68% | 2349 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 42,351 psi | 72% | 2320 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 31,604 psi | 54% | 2205 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 35,795 psi | 61% | 2244 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 48,515 psi | 83% | 2339 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,559 psi | 83% | 2349 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,277 psi | 69% | 2257 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,434 psi | 62% | 2241 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 92% | 37,362 psi | 64% | 2267 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 47,050 psi | 80% | 2352 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,940 psi | 61% | 2244 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 27,398 psi | 47% | 2110 fps | 96.3% |
| Vihtavuori N560 | <<locked>> | 96% | 46,528 psi | 79% | 2520 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,476 psi | 60% | 2211 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 37,173 psi | 63% | 2287 fps | 96.4% |
| Winchester StaBALL HD | <<locked>> | 82% | 23,598 psi | 40% | 2060 fps | 95.7% |
| Winchester Supreme 780 | <<locked>> | 92% | 40,132 psi | 68% | 2323 fps | 95.3% |
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 95 powders for .280 Rem. loaded with the .284 | 183gr | Sierra MatchKing. Norma MRP delivers the highest muzzle velocity at 2,638 fps; across all powders the maximum-charge window runs from 1,526 fps to 2,638 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 183.0 gr projectile in 0.284" calls for a 1:8.5 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. ReloadSwiss RS 70, Alliant Reloder-26, Alliant Reloder-17 rank at the top here: for .280 Rem. with the .284 | 183gr | Sierra MatchKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 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.