Load Specifications
Load data in caliber .280 Rem. with .284 | 150gr | Sierra GameKing bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 and Somchem S365.
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>> | 84% | 52,997 psi | 90% | 2697 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 51,358 psi | 87% | 2700 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,413 psi | 81% | 2723 fps | 98.2% |
| Accurate 4064 | <<locked>> | 84% | 50,053 psi | 85% | 2700 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 49,908 psi | 85% | 2785 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 82% | 52,794 psi | 90% | 2772 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 50,908 psi | 87% | 2730 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 98% | 51,155 psi | 87% | 2815 fps | 96.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,460 psi | 89% | 2887 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 51,155 psi | 87% | 2753 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 51,256 psi | 87% | 2766 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 50,966 psi | 87% | 2841 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 51,750 psi | 88% | 2871 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 50,270 psi | 86% | 2802 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,483 psi | 76% | 2746 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,218 psi | 67% | 2654 fps | 96.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,560 psi | 86% | 2927 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,460 psi | 89% | 2785 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 51,561 psi | 88% | 2762 fps | 100% |
| Bofors RP7 | <<locked>> | 90% | 51,532 psi | 88% | 2740 fps | 97.6% |
| Hodgdon H380 | <<locked>> | 86% | 52,127 psi | 89% | 2776 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 92% | 52,257 psi | 89% | 2831 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 90% | 52,663 psi | 90% | 2795 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 50,778 psi | 86% | 2769 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 49,806 psi | 85% | 2762 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 52,272 psi | 89% | 2864 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,027 psi | 61% | 1726 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 51,242 psi | 87% | 2736 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 50,386 psi | 86% | 2710 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 52,910 psi | 90% | 2740 fps | 98.3% |
| IMR 4350 | <<locked>> | 94% | 51,996 psi | 89% | 2769 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,127 psi | 90% | 2769 fps | 98.3% |
| IMR 4831 | <<locked>> | 94% | 50,357 psi | 86% | 2776 fps | 99.7% |
| IMR 4895 | <<locked>> | 84% | 52,576 psi | 90% | 2795 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 52,794 psi | 90% | 2746 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,243 psi | 89% | 2700 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 50,444 psi | 86% | 2707 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 52,823 psi | 90% | 2766 fps | 99.2% |
| Lovex S070 | <<locked>> | 92% | 50,705 psi | 86% | 2749 fps | 98.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,247 psi | 67% | 2572 fps | 96.3% |
| Norma 201 | <<locked>> | 82% | 51,677 psi | 88% | 2717 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,388 psi | 89% | 2720 fps | 100% |
| Norma 203B | <<locked>> | 84% | 50,560 psi | 86% | 2753 fps | 100% |
| Norma 204 | <<locked>> | 94% | 52,330 psi | 89% | 2812 fps | 96.6% |
| Norma MRPᴾ | <<locked>> | 100% | 49,966 psi | 85% | 2877 fps | 97.9% |
| Norma URP | <<locked>> | 94% | 52,272 psi | 89% | 2825 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 50,923 psi | 87% | 2776 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 50,995 psi | 87% | 2818 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,695 psi | 62% | 1768 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,214 psi | 89% | 2756 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 51,735 psi | 88% | 2828 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 51,387 psi | 87% | 2864 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 52,953 psi | 90% | 2858 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 51,851 psi | 88% | 2884 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 84% | 52,489 psi | 89% | 2723 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 51,735 psi | 88% | 2759 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,620 psi | 90% | 2841 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 90% | 51,532 psi | 88% | 2740 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 52,823 psi | 90% | 2766 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 52,794 psi | 90% | 2746 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 50,444 psi | 86% | 2707 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 50,705 psi | 86% | 2749 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,069 psi | 90% | 2815 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 51,213 psi | 87% | 2743 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,765 psi | 90% | 2657 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 50,096 psi | 85% | 2615 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 52,895 psi | 90% | 2720 fps | 98.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,127 psi | 89% | 2835 fps | 96.9% |
| Somchem S335 | <<locked>> | 82% | 52,373 psi | 89% | 2654 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 51,793 psi | 88% | 2756 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 50,705 psi | 86% | 2828 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 49,966 psi | 85% | 2766 fps | 97.3% |
| Vihtavuori N135 | <<locked>> | 84% | 52,417 psi | 89% | 2684 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 52,707 psi | 90% | 2697 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,156 psi | 90% | 2736 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 51,256 psi | 87% | 2772 fps | 99.6% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,137 psi | 79% | 2687 fps | 96% |
| Vihtavuori N540 | <<locked>> | 84% | 51,082 psi | 87% | 2697 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 50,343 psi | 86% | 2776 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,835 psi | 85% | 2825 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 50,792 psi | 86% | 2743 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 52,533 psi | 89% | 2838 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,030 psi | 68% | 2779 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 51,068 psi | 87% | 2749 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,270 psi | 86% | 2762 fps | 96.2% |
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% | 46,630 psi | 79% | 2605 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,208 psi | 77% | 2592 fps | 95.9% |
| Accurate 3100 | <<locked>> | 92% | 36,085 psi | 61% | 2503 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 44,121 psi | 75% | 2605 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,953 psi | 56% | 2448 fps | 96% |
| ADI AR 2206H | <<locked>> | 80% | 49,661 psi | 85% | 2720 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,264 psi | 72% | 2575 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 96% | 48,008 psi | 82% | 2759 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,672 psi | 78% | 2769 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,395 psi | 72% | 2598 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,281 psi | 77% | 2661 fps | 99.4% |
| Alliant Reloder-16 | 43.9 gr | 80% | 32,793 psi | 56% | 2457 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,767 psi | 63% | 2582 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,268 psi | 80% | 2749 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,747 psi | 49% | 2372 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,709 psi | 62% | 2592 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,953 psi | 56% | 2546 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,095 psi | 84% | 2730 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 42,322 psi | 72% | 2608 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 42,786 psi | 73% | 2582 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 42,917 psi | 73% | 2612 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 40,118 psi | 68% | 2605 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 86% | 46,311 psi | 79% | 2684 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,240 psi | 51% | 2359 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,470 psi | 79% | 2710 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 42,090 psi | 72% | 2677 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,890 psi | 46% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,892 psi | 82% | 2677 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,440 psi | 76% | 2608 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,601 psi | 79% | 2628 fps | 97.1% |
| IMR 4350 | <<locked>> | 88% | 43,062 psi | 73% | 2608 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,669 psi | 71% | 2559 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 31,908 psi | 54% | 2405 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 46,412 psi | 79% | 2690 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 49,545 psi | 84% | 2700 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,182 psi | 84% | 2654 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,556 psi | 76% | 2612 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,593 psi | 62% | 2457 fps | 95.7% |
| Lovex S070 | <<locked>> | 84% | 39,465 psi | 67% | 2536 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 36,753 psi | 63% | 2520 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 48,588 psi | 83% | 2667 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,197 psi | 84% | 2671 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,628 psi | 76% | 2651 fps | 99.6% |
| Norma 204 | <<locked>> | 92% | 49,081 psi | 84% | 2759 fps | 95.8% |
| Norma MRP | <<locked>> | 94% | 40,770 psi | 69% | 2697 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 33,098 psi | 56% | 2444 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 44,454 psi | 76% | 2667 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 36,738 psi | 63% | 2539 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,325 psi | 47% | 1581 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,018 psi | 73% | 2592 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,457 psi | 82% | 2776 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,088 psi | 67% | 2644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,692 psi | 56% | 2464 fps | 95.5% |
| ReloadSwiss RS 70 | 49.2 gr | 82% | 34,461 psi | 59% | 2520 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 46,340 psi | 79% | 2621 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,769 psi | 68% | 2552 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 96% | 46,137 psi | 79% | 2733 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 84% | 42,786 psi | 73% | 2582 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,593 psi | 62% | 2457 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,545 psi | 84% | 2700 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,556 psi | 76% | 2612 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 39,465 psi | 67% | 2536 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,872 psi | 70% | 2605 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,211 psi | 82% | 2694 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,574 psi | 84% | 2608 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,582 psi | 71% | 2480 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,915 psi | 70% | 2510 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,687 psi | 78% | 2726 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 49,313 psi | 84% | 2612 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,364 psi | 69% | 2552 fps | 99.3% |
| Somchem S365 | 44.8 gr | 80% | 29,631 psi | 50% | 2398 fps | 98% |
| Somchem S385 | <<locked>> | 92% | 41,104 psi | 70% | 2605 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 46,079 psi | 78% | 2592 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,528 psi | 79% | 2605 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,479 psi | 66% | 2490 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 34,461 psi | 59% | 2448 fps | 96.3% |
| Vihtavuori N165 | <<locked>> | 98% | 43,047 psi | 73% | 2631 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 44,947 psi | 77% | 2598 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,026 psi | 58% | 2451 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 84% | 29,254 psi | 50% | 2392 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,910 psi | 58% | 2421 fps | 98.3% |
| Winchester 760 | <<locked>> | 84% | 40,118 psi | 68% | 2605 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,064 psi | 46% | 2392 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,776 psi | 81% | 2694 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 46,775 psi | 80% | 2700 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 85 powders for .280 Rem. loaded with the .284 | 150gr | Sierra GameKing. Alliant Reloder-26 delivers the highest muzzle velocity at 2,927 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,927 fps. Accurate 3100 gives the best case fill at 100 %, and 85 of the 85 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 150.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-25 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-16, ReloadSwiss RS 70, Somchem S365 rank at the top here: for .280 Rem. with the .284 | 150gr | 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.