Load Specifications
Load data in caliber .280 Rem. with .284 | 139gr | Hornady GMX bullet and 89 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-17 and ReloadSwiss RS 60.
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 2015 | <<locked>> | 82% | 51,314 psi | 87% | 2736 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 52,968 psi | 90% | 2802 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 51,488 psi | 88% | 2818 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 52,663 psi | 90% | 2802 fps | 96.4% |
| Accurate 4064 | <<locked>> | 90% | 52,910 psi | 90% | 2848 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 53,127 psi | 90% | 2930 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 84% | 50,502 psi | 86% | 2828 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 90% | 51,851 psi | 88% | 2835 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 84% | 52,866 psi | 90% | 2835 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 50,285 psi | 86% | 2766 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 50,024 psi | 85% | 2940 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 51,532 psi | 88% | 2854 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 52,025 psi | 89% | 2874 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 98% | 51,300 psi | 87% | 2936 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 94% | 52,228 psi | 89% | 2972 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,798 psi | 66% | 2717 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,526 psi | 74% | 2877 fps | 97.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 50,183 psi | 85% | 2838 fps | 99.2% |
| Bofors RP3 | <<locked>> | 90% | 51,692 psi | 88% | 2864 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 52,460 psi | 89% | 2838 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 51,547 psi | 88% | 2772 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 52,098 psi | 89% | 2861 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 52,982 psi | 90% | 2881 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 96% | 52,808 psi | 90% | 2933 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 84% | 50,981 psi | 87% | 2838 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,850 psi | 87% | 2864 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 50,343 psi | 86% | 2871 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 49,574 psi | 84% | 2900 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,375 psi | 60% | 1772 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 52,460 psi | 89% | 2848 fps | 99.9% |
| IMR 3031 | <<locked>> | 84% | 51,024 psi | 87% | 2828 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 51,140 psi | 87% | 2815 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 86% | 51,198 psi | 87% | 2792 fps | 97% |
| IMR 4350 | <<locked>> | 98% | 52,663 psi | 90% | 2864 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 51,039 psi | 87% | 2818 fps | 96.9% |
| IMR 4831 | <<locked>> | 98% | 50,241 psi | 86% | 2867 fps | 99.2% |
| IMR 4895 | <<locked>> | 86% | 50,009 psi | 85% | 2851 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 84% | 52,866 psi | 90% | 2835 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 49,850 psi | 85% | 2805 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 50,459 psi | 86% | 2762 fps | 99.7% |
| Lovex S062 | <<locked>> | 88% | 50,850 psi | 87% | 2812 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 50,299 psi | 86% | 2812 fps | 98.1% |
| Lovex S070 | <<locked>> | 96% | 50,952 psi | 87% | 2841 fps | 97.2% |
| Norma 201 | <<locked>> | 86% | 52,504 psi | 89% | 2825 fps | 100% |
| Norma 202 | <<locked>> | 84% | 49,922 psi | 85% | 2782 fps | 100% |
| Norma 203B | <<locked>> | 88% | 51,256 psi | 87% | 2858 fps | 99.8% |
| Norma URP | <<locked>> | 98% | 52,417 psi | 89% | 2920 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 88% | 51,924 psi | 88% | 2887 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 98% | 51,169 psi | 87% | 2910 fps | 98% |
| Ramshot TAC | <<locked>> | 84% | 53,142 psi | 90% | 2851 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 52,866 psi | 90% | 2871 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,650 psi | 61% | 1811 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 50,096 psi | 85% | 2808 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 52,562 psi | 89% | 2940 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 52,156 psi | 89% | 2976 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 52,794 psi | 90% | 2953 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 52,808 psi | 90% | 2982 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 82% | 50,154 psi | 85% | 2762 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 53,040 psi | 90% | 2828 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 51,909 psi | 88% | 2861 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 52,460 psi | 89% | 2838 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 50,299 psi | 86% | 2812 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 49,850 psi | 85% | 2805 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 50,850 psi | 87% | 2812 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 50,952 psi | 87% | 2841 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 50,212 psi | 85% | 2867 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 51,517 psi | 88% | 2825 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 52,533 psi | 89% | 2858 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 50,778 psi | 86% | 2723 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 51,068 psi | 87% | 2723 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 50,285 psi | 86% | 2759 fps | 96.8% |
| Somchem S335 | <<locked>> | 84% | 50,183 psi | 85% | 2720 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 51,155 psi | 87% | 2818 fps | 99.7% |
| Somchem S355 | <<locked>> | 92% | 52,185 psi | 89% | 2858 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,328 psi | 86% | 2923 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 51,155 psi | 87% | 2710 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 52,808 psi | 90% | 2795 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 50,401 psi | 86% | 2762 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 50,459 psi | 86% | 2792 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 51,474 psi | 88% | 2864 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 82% | 49,835 psi | 85% | 2779 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 52,040 psi | 89% | 2808 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 50,386 psi | 86% | 2867 fps | 98.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,467 psi | 72% | 2792 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 51,808 psi | 88% | 2848 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 49,661 psi | 85% | 2825 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 52,808 psi | 90% | 2933 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,693 psi | 59% | 2710 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 86% | 52,257 psi | 89% | 2864 fps | 100% |
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 2015 | <<locked>> | 80% | 48,298 psi | 82% | 2690 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,422 psi | 69% | 2605 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,877 psi | 82% | 2762 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 49,400 psi | 84% | 2746 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 38,247 psi | 65% | 2595 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,548 psi | 59% | 2572 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 44,599 psi | 76% | 2723 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 37,840 psi | 64% | 2569 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,760 psi | 80% | 2733 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 46,847 psi | 80% | 2713 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,495 psi | 69% | 2746 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,231 psi | 63% | 2585 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,248 psi | 69% | 2654 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 35,027 psi | 60% | 2595 fps | 95.6% |
| Alliant Reloder-17 | 45.8 gr | 80% | 32,213 psi | 55% | 2549 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 30,066 psi | 51% | 2487 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,521 psi | 64% | 2740 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,874 psi | 75% | 2726 fps | 98.2% |
| Bofors RP3 | <<locked>> | 80% | 36,753 psi | 63% | 2585 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 46,035 psi | 78% | 2726 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,385 psi | 82% | 2720 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,426 psi | 77% | 2749 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 37,782 psi | 64% | 2592 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 90% | 42,931 psi | 73% | 2749 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 44,991 psi | 77% | 2733 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,965 psi | 51% | 2431 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,959 psi | 70% | 2700 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 92% | 46,122 psi | 79% | 2835 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,208 psi | 45% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,134 psi | 73% | 2684 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 44,643 psi | 76% | 2726 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,740 psi | 68% | 2602 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 45,063 psi | 77% | 2680 fps | 95.5% |
| IMR 4350 | <<locked>> | 94% | 46,296 psi | 79% | 2753 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,947 psi | 77% | 2707 fps | 95.4% |
| IMR 4831 | <<locked>> | 86% | 33,591 psi | 57% | 2533 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 41,234 psi | 70% | 2684 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 46,760 psi | 80% | 2733 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 43,540 psi | 74% | 2697 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,643 psi | 76% | 2661 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 39,552 psi | 67% | 2605 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 39,059 psi | 66% | 2595 fps | 95.3% |
| Lovex S070 | <<locked>> | 90% | 42,192 psi | 72% | 2677 fps | 95% |
| Norma 201 | <<locked>> | 80% | 43,366 psi | 74% | 2671 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 43,729 psi | 74% | 2680 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,624 psi | 67% | 2641 fps | 98.2% |
| Norma URP | <<locked>> | 86% | 35,070 psi | 60% | 2582 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 39,160 psi | 67% | 2651 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 41,843 psi | 71% | 2736 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 46,644 psi | 79% | 2736 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,992 psi | 78% | 2753 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,556 psi | 45% | 1621 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,814 psi | 69% | 2631 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,438 psi | 72% | 2759 fps | 98.3% |
| ReloadSwiss RS 60 | 45.8 gr | 80% | 34,330 psi | 58% | 2618 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 37,028 psi | 63% | 2654 fps | 95.9% |
| ReloadSwiss RS 70 | 51.2 gr | 88% | 37,362 psi | 64% | 2667 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 47,282 psi | 80% | 2713 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,292 psi | 70% | 2621 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 34,664 psi | 59% | 2530 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 90% | 46,035 psi | 78% | 2726 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,059 psi | 66% | 2595 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,540 psi | 74% | 2697 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,552 psi | 67% | 2605 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 90% | 42,192 psi | 72% | 2677 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,839 psi | 61% | 2585 fps | 97.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,657 psi | 76% | 2707 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,091 psi | 73% | 2690 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,933 psi | 76% | 2628 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,318 psi | 64% | 2490 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,990 psi | 75% | 2648 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 44,411 psi | 76% | 2628 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,672 psi | 76% | 2710 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 35,505 psi | 60% | 2536 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 27,369 psi | 47% | 2411 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 45,324 psi | 77% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,886 psi | 70% | 2605 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,597 psi | 71% | 2615 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,823 psi | 58% | 2477 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 84% | 34,258 psi | 58% | 2526 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 46,630 psi | 79% | 2723 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 39,958 psi | 68% | 2602 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 36,216 psi | 62% | 2589 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 92% | 32,314 psi | 55% | 2562 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,023 psi | 51% | 2395 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 46,485 psi | 79% | 2772 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 43,221 psi | 74% | 2756 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,284 psi | 52% | 2569 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,438 psi | 72% | 2690 fps | 99.1% |
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 89 powders for .280 Rem. loaded with the .284 | 139gr | Hornady GMX. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,982 fps; across all powders the maximum-charge window runs from 1,772 fps to 2,982 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, Hodgdon Hybrid 100V 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-17, ReloadSwiss RS 60 rank at the top here: for .280 Rem. with the .284 | 139gr | Hornady GMX 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.