Load Specifications
Load data in caliber .280 Rem. with .284 | 160gr | Sierra GameKing bullet and 80 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 Hodgdon Superformance.
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% | 50,865 psi | 87% | 2572 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 52,460 psi | 89% | 2628 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,443 psi | 82% | 2654 fps | 98.8% |
| Accurate 4064 | <<locked>> | 84% | 51,271 psi | 87% | 2621 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 51,169 psi | 87% | 2713 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 52,910 psi | 90% | 2841 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 86% | 51,779 psi | 88% | 2651 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 52,504 psi | 89% | 2749 fps | 97.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 50,125 psi | 85% | 2756 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 52,141 psi | 89% | 2671 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 52,518 psi | 89% | 2690 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 52,069 psi | 89% | 2766 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,142 psi | 90% | 2795 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 51,692 psi | 88% | 2736 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,341 psi | 82% | 2730 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,818 psi | 78% | 2680 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,190 psi | 68% | 2598 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,127 psi | 89% | 2861 fps | 100% |
| Bofors RP3 | <<locked>> | 86% | 52,794 psi | 90% | 2687 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,341 psi | 82% | 2730 fps | 96.7% |
| Bofors RP7 | <<locked>> | 90% | 52,649 psi | 90% | 2671 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 84% | 49,980 psi | 85% | 2651 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 90% | 50,241 psi | 86% | 2710 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 88% | 50,415 psi | 86% | 2671 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 52,069 psi | 89% | 2694 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 50,908 psi | 87% | 2687 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 49,734 psi | 85% | 2736 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,998 psi | 61% | 1660 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 52,025 psi | 89% | 2651 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 51,155 psi | 87% | 2631 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 50,589 psi | 86% | 2612 fps | 98.3% |
| IMR 4350 | <<locked>> | 94% | 53,156 psi | 90% | 2700 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 51,010 psi | 87% | 2644 fps | 98.3% |
| IMR 4831 | <<locked>> | 94% | 51,605 psi | 88% | 2707 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 50,560 psi | 86% | 2667 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 53,156 psi | 90% | 2625 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 51,271 psi | 87% | 2628 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 50,850 psi | 87% | 2644 fps | 99.3% |
| Lovex S070 | <<locked>> | 92% | 51,721 psi | 88% | 2677 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,466 psi | 69% | 2516 fps | 97.2% |
| Norma 201 | <<locked>> | 82% | 52,707 psi | 90% | 2638 fps | 100% |
| Norma 203B | <<locked>> | 84% | 51,822 psi | 88% | 2680 fps | 100% |
| Norma 204 | <<locked>> | 92% | 50,053 psi | 85% | 2687 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 51,198 psi | 87% | 2812 fps | 98.6% |
| Norma URP | <<locked>> | 92% | 50,154 psi | 85% | 2700 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 52,199 psi | 89% | 2703 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 52,141 psi | 89% | 2746 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,724 psi | 63% | 1703 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 49,937 psi | 85% | 2631 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 52,620 psi | 90% | 2785 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 50,879 psi | 87% | 2733 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 49,792 psi | 85% | 2756 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 82% | 50,299 psi | 86% | 2595 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 52,924 psi | 90% | 2684 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 50,459 psi | 86% | 2717 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 90% | 52,649 psi | 90% | 2671 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 50,850 psi | 87% | 2644 fps | 99.3% |
| Shooters World Precision | <<locked>> | 84% | 51,271 psi | 87% | 2628 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 51,721 psi | 88% | 2677 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 50,850 psi | 87% | 2690 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 52,460 psi | 89% | 2667 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 51,111 psi | 87% | 2536 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 50,531 psi | 86% | 2595 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,980 psi | 85% | 2713 fps | 97.1% |
| Somchem S355 | <<locked>> | 88% | 52,881 psi | 90% | 2677 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 52,315 psi | 89% | 2753 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 51,198 psi | 87% | 2700 fps | 98% |
| Vihtavuori N135 | <<locked>> | 82% | 50,444 psi | 86% | 2562 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 50,604 psi | 86% | 2575 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 50,981 psi | 87% | 2612 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 52,417 psi | 89% | 2697 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,021 psi | 80% | 2618 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 84% | 52,083 psi | 89% | 2618 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 51,532 psi | 88% | 2703 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,155 psi | 87% | 2753 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 51,909 psi | 88% | 2667 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 50,241 psi | 86% | 2710 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,031 psi | 70% | 2720 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 52,170 psi | 89% | 2671 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,314 psi | 87% | 2694 fps | 97% |
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% | 47,587 psi | 81% | 2526 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,977 psi | 78% | 2520 fps | 96.7% |
| Accurate 3100 | <<locked>> | 90% | 34,679 psi | 59% | 2395 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 45,078 psi | 77% | 2530 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,881 psi | 58% | 2388 fps | 97% |
| Accurate High Country | <<locked>> | 98% | 49,429 psi | 84% | 2782 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 43,033 psi | 73% | 2503 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 94% | 46,093 psi | 78% | 2638 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,934 psi | 80% | 2700 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,294 psi | 74% | 2530 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,253 psi | 79% | 2589 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,678 psi | 57% | 2402 fps | 97.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,550 psi | 64% | 2520 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 92% | 42,728 psi | 73% | 2579 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 96% | 42,467 psi | 72% | 2618 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,020 psi | 44% | 2215 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,315 psi | 57% | 2431 fps | 95.1% |
| Alliant Reloder-26 | 50.6 gr | 86% | 31,589 psi | 54% | 2431 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 43,352 psi | 74% | 2536 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 42,467 psi | 72% | 2618 fps | 95.1% |
| Bofors RP7 | <<locked>> | 82% | 41,060 psi | 70% | 2464 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 43,961 psi | 75% | 2546 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 38,508 psi | 66% | 2490 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 82% | 41,684 psi | 71% | 2510 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,125 psi | 53% | 2303 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,456 psi | 81% | 2631 fps | 100% |
| Hodgdon Superformance | 51 gr | 84% | 40,277 psi | 69% | 2556 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,064 psi | 46% | 1486 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,124 psi | 84% | 2608 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,252 psi | 77% | 2536 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,514 psi | 81% | 2559 fps | 97.8% |
| IMR 4350 | <<locked>> | 86% | 41,336 psi | 70% | 2490 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,943 psi | 68% | 2441 fps | 95.8% |
| IMR 4831 | <<locked>> | 80% | 32,764 psi | 56% | 2349 fps | 96.6% |
| IMR 4895 | <<locked>> | 80% | 47,413 psi | 81% | 2618 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,966 psi | 85% | 2575 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,411 psi | 77% | 2536 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,333 psi | 64% | 2392 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 37,942 psi | 65% | 2425 fps | 95.6% |
| Lovex S071 | <<locked>> | 96% | 35,534 psi | 60% | 2415 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 49,458 psi | 84% | 2592 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,600 psi | 78% | 2579 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 43,656 psi | 74% | 2575 fps | 95% |
| Norma MRP | <<locked>> | 92% | 39,189 psi | 67% | 2582 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 33,924 psi | 58% | 2388 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 80% | 45,687 psi | 78% | 2598 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 35,302 psi | 60% | 2428 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,325 psi | 47% | 1519 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,063 psi | 75% | 2530 fps | 97.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,943 psi | 68% | 2572 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,547 psi | 57% | 2405 fps | 96.5% |
| ReloadSwiss RS 70 | 46.7 gr | 80% | 33,127 psi | 56% | 2408 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 47,152 psi | 80% | 2546 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,727 psi | 69% | 2484 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 94% | 44,367 psi | 76% | 2612 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 82% | 41,060 psi | 70% | 2464 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,333 psi | 64% | 2392 fps | 96.6% |
| Shooters World Precision | <<locked>> | 80% | 45,411 psi | 77% | 2536 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 37,942 psi | 65% | 2425 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,698 psi | 71% | 2533 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,023 psi | 83% | 2615 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,511 psi | 72% | 2408 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,088 psi | 67% | 2392 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 43,947 psi | 75% | 2608 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 41,176 psi | 70% | 2484 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 30,603 psi | 52% | 2349 fps | 98.9% |
| Somchem S385 | <<locked>> | 90% | 39,494 psi | 67% | 2490 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 47,181 psi | 80% | 2516 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,471 psi | 81% | 2530 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,291 psi | 67% | 2421 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 35,317 psi | 60% | 2388 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 96% | 41,495 psi | 71% | 2520 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 45,963 psi | 78% | 2526 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,925 psi | 59% | 2392 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 82% | 28,239 psi | 48% | 2290 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,635 psi | 59% | 2362 fps | 98.9% |
| Winchester 760 | <<locked>> | 82% | 38,508 psi | 66% | 2490 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,034 psi | 44% | 2293 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,994 psi | 83% | 2625 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 44,831 psi | 76% | 2585 fps | 95.5% |
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 80 powders for .280 Rem. loaded with the .284 | 160gr | Sierra GameKing. Alliant Reloder-26 delivers the highest muzzle velocity at 2,861 fps; across all powders the maximum-charge window runs from 1,660 fps to 2,861 fps. Accurate 3100 gives the best case fill at 100 %, and 80 of the 80 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Alliant Reloder-22 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, Hodgdon Superformance rank at the top here: for .280 Rem. with the .284 | 160gr | Sierra GameKing 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.