Load Specifications
Load data in caliber .280 Rem. with .284 | 160gr | Sierra SBT GameKing bullet and 79 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% | 51,387 psi | 87% | 2582 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,055 psi | 90% | 2644 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,371 psi | 84% | 2674 fps | 99% |
| Accurate 4064 | <<locked>> | 84% | 51,779 psi | 88% | 2635 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 51,909 psi | 88% | 2726 fps | 99.9% |
| Accurate High Country | <<locked>> | 98% | 50,285 psi | 86% | 2802 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 86% | 52,475 psi | 89% | 2664 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 53,069 psi | 90% | 2762 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 50,865 psi | 87% | 2772 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 52,852 psi | 90% | 2687 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 52,968 psi | 90% | 2703 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 52,721 psi | 90% | 2779 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 50,111 psi | 85% | 2753 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 52,228 psi | 89% | 2749 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,139 psi | 84% | 2746 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,398 psi | 79% | 2694 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,625 psi | 69% | 2608 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,968 psi | 90% | 2877 fps | 100% |
| Bofors RP3 | <<locked>> | 84% | 49,850 psi | 85% | 2648 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,139 psi | 84% | 2746 fps | 97% |
| Bofors RP7 | <<locked>> | 90% | 52,953 psi | 90% | 2677 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 84% | 50,691 psi | 86% | 2664 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 90% | 50,865 psi | 87% | 2723 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 88% | 51,053 psi | 87% | 2684 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,026 psi | 90% | 2710 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 51,619 psi | 88% | 2700 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 50,502 psi | 86% | 2753 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,260 psi | 62% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 52,779 psi | 90% | 2667 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 51,880 psi | 88% | 2644 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 51,213 psi | 87% | 2628 fps | 98.5% |
| IMR 4350 | <<locked>> | 92% | 50,488 psi | 86% | 2661 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 88% | 51,634 psi | 88% | 2661 fps | 98.5% |
| IMR 4831 | <<locked>> | 94% | 52,272 psi | 89% | 2717 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 51,010 psi | 87% | 2680 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 52,025 psi | 89% | 2644 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 51,459 psi | 88% | 2657 fps | 99.4% |
| Lovex S070 | <<locked>> | 92% | 52,344 psi | 89% | 2690 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,031 psi | 70% | 2530 fps | 97.4% |
| Norma 203B | <<locked>> | 84% | 52,228 psi | 89% | 2690 fps | 100% |
| Norma 204 | <<locked>> | 92% | 50,618 psi | 86% | 2700 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 52,040 psi | 89% | 2828 fps | 98.8% |
| Norma URP | <<locked>> | 92% | 50,821 psi | 87% | 2713 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 52,895 psi | 90% | 2717 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 53,040 psi | 90% | 2766 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,709 psi | 62% | 1706 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 50,560 psi | 86% | 2648 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 49,908 psi | 85% | 2749 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 51,532 psi | 88% | 2749 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 50,372 psi | 86% | 2769 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 82% | 50,749 psi | 86% | 2605 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 50,038 psi | 85% | 2644 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 51,358 psi | 87% | 2680 fps | 96% |
| Rottweil R 905 | <<locked>> | 98% | 51,343 psi | 87% | 2736 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 90% | 52,953 psi | 90% | 2677 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 51,459 psi | 88% | 2657 fps | 99.4% |
| Shooters World Precision | <<locked>> | 84% | 52,025 psi | 89% | 2644 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 52,344 psi | 89% | 2690 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 51,474 psi | 88% | 2700 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 52,881 psi | 90% | 2677 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 51,822 psi | 88% | 2549 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 51,140 psi | 87% | 2612 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 50,879 psi | 87% | 2733 fps | 97.3% |
| Somchem S355 | <<locked>> | 86% | 50,328 psi | 86% | 2644 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 53,011 psi | 90% | 2766 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 52,054 psi | 89% | 2717 fps | 98.2% |
| Vihtavuori N135 | <<locked>> | 82% | 50,966 psi | 87% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 51,053 psi | 87% | 2585 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 51,372 psi | 87% | 2621 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,084 psi | 90% | 2710 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,848 psi | 81% | 2638 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 84% | 52,736 psi | 90% | 2631 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 52,185 psi | 89% | 2717 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,851 psi | 88% | 2766 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 52,721 psi | 90% | 2684 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 50,865 psi | 87% | 2723 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,742 psi | 71% | 2736 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 52,866 psi | 90% | 2687 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,127 psi | 89% | 2710 fps | 97.3% |
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% | 48,414 psi | 82% | 2539 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,630 psi | 79% | 2536 fps | 96.9% |
| Accurate 3100 | <<locked>> | 90% | 35,244 psi | 60% | 2411 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 45,847 psi | 78% | 2546 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,316 psi | 58% | 2402 fps | 97.2% |
| Accurate High Country | <<locked>> | 96% | 46,818 psi | 80% | 2740 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 43,468 psi | 74% | 2516 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 43,772 psi | 75% | 2598 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,355 psi | 81% | 2713 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,714 psi | 74% | 2539 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,688 psi | 79% | 2602 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,040 psi | 58% | 2415 fps | 97.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,189 psi | 65% | 2533 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,250 psi | 74% | 2592 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 43,207 psi | 74% | 2638 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,295 psi | 45% | 2228 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,707 psi | 57% | 2444 fps | 95.4% |
| Alliant Reloder-26 | 51.2 gr | 86% | 32,024 psi | 55% | 2448 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 43,772 psi | 75% | 2549 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 43,207 psi | 74% | 2638 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 38,885 psi | 66% | 2421 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 44,338 psi | 75% | 2556 fps | 99% |
| Hodgdon H414 | <<locked>> | 82% | 38,899 psi | 66% | 2500 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 82% | 42,076 psi | 72% | 2523 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,517 psi | 54% | 2316 fps | 98% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,167 psi | 82% | 2648 fps | 100% |
| Hodgdon Superformance | 51.6 gr | 84% | 40,756 psi | 69% | 2569 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,934 psi | 46% | 1486 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,545 psi | 84% | 2618 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,687 psi | 78% | 2546 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,153 psi | 82% | 2575 fps | 98% |
| IMR 4350 | <<locked>> | 84% | 39,363 psi | 67% | 2457 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,335 psi | 69% | 2454 fps | 96% |
| IMR 4831 | <<locked>> | 80% | 33,156 psi | 56% | 2359 fps | 96.8% |
| IMR 4895 | <<locked>> | 80% | 47,892 psi | 82% | 2631 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,847 psi | 78% | 2546 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,927 psi | 65% | 2408 fps | 96.9% |
| Lovex S070 | <<locked>> | 80% | 35,969 psi | 61% | 2385 fps | 95% |
| Lovex S071 | <<locked>> | 94% | 33,953 psi | 58% | 2382 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 46,064 psi | 78% | 2589 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 44,222 psi | 75% | 2589 fps | 95.2% |
| Norma MRP | <<locked>> | 92% | 39,682 psi | 68% | 2595 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 34,345 psi | 58% | 2402 fps | 97% |
| Ramshot Big Game | <<locked>> | 80% | 46,093 psi | 78% | 2608 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 35,636 psi | 61% | 2438 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,412 psi | 47% | 1522 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,425 psi | 76% | 2539 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,582 psi | 69% | 2589 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,939 psi | 58% | 2415 fps | 96.7% |
| ReloadSwiss RS 70 | 47.2 gr | 80% | 33,446 psi | 57% | 2421 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 47,674 psi | 81% | 2559 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,176 psi | 70% | 2493 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 48,167 psi | 82% | 2628 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 92% | 42,105 psi | 72% | 2572 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 38,885 psi | 66% | 2421 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,927 psi | 65% | 2408 fps | 96.9% |
| Shooters World Precision | <<locked>> | 80% | 45,847 psi | 78% | 2546 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 35,969 psi | 61% | 2385 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,351 psi | 72% | 2549 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,719 psi | 85% | 2631 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,960 psi | 73% | 2418 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 36,956 psi | 63% | 2352 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 41,698 psi | 71% | 2569 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 41,872 psi | 71% | 2500 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 30,995 psi | 53% | 2359 fps | 99% |
| Somchem S385 | <<locked>> | 90% | 40,045 psi | 68% | 2503 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 47,718 psi | 81% | 2526 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,906 psi | 82% | 2539 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,697 psi | 68% | 2431 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 35,737 psi | 61% | 2402 fps | 97.4% |
| Vihtavuori N165 | <<locked>> | 96% | 42,003 psi | 72% | 2533 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 46,383 psi | 79% | 2536 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,317 psi | 60% | 2405 fps | 97.1% |
| Vihtavuori N555 | <<locked>> | 82% | 28,601 psi | 49% | 2300 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,114 psi | 60% | 2379 fps | 99.1% |
| Winchester 760 | <<locked>> | 82% | 39,160 psi | 67% | 2507 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,426 psi | 45% | 2310 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,385 psi | 84% | 2635 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,281 psi | 77% | 2595 fps | 95.7% |
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 96 powders for .280 Rem. loaded with the .284 | 160gr | Sierra SBT GameKing. Alliant Reloder-26 delivers the highest muzzle velocity at 2,877 fps; across all powders the maximum-charge window runs from 1,670 fps to 2,877 fps. Accurate 3100 gives the best case fill at 100 %, and 96 of the 96 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 160.0 gr projectile in 0.284" calls for a 1:11.5 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, Hodgdon Superformance rank at the top here: for .280 Rem. with the .284 | 160gr | Sierra SBT GameKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Baschieri & Pellagri 109, Bofors RP30 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.