Load Specifications
Load data in caliber .280 Rem. with .284 | 145gr | Prvi Partizan SP 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-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 2495 | <<locked>> | 84% | 52,185 psi | 89% | 2733 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 50,560 psi | 86% | 2730 fps | 96.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,470 psi | 79% | 2749 fps | 97.8% |
| Accurate 4064 | <<locked>> | 86% | 52,373 psi | 89% | 2782 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 52,156 psi | 89% | 2867 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 52,069 psi | 89% | 2805 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 50,183 psi | 85% | 2762 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 98% | 50,386 psi | 86% | 2841 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 51,837 psi | 88% | 2927 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 50,328 psi | 86% | 2785 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 50,763 psi | 86% | 2805 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 94% | 50,241 psi | 86% | 2874 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 90% | 50,952 psi | 87% | 2904 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,924 psi | 90% | 2890 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,685 psi | 74% | 2772 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,551 psi | 66% | 2674 fps | 96.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,458 psi | 84% | 2953 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 51,895 psi | 88% | 2822 fps | 99.7% |
| Bofors RP3 | <<locked>> | 86% | 50,647 psi | 86% | 2795 fps | 100% |
| Bofors RP7 | <<locked>> | 90% | 50,662 psi | 86% | 2769 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 86% | 51,532 psi | 88% | 2808 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 92% | 51,445 psi | 88% | 2864 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 90% | 51,735 psi | 88% | 2825 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 82% | 52,663 psi | 90% | 2818 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 49,995 psi | 85% | 2802 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 52,359 psi | 89% | 2851 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 51,343 psi | 87% | 2894 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,940 psi | 61% | 1759 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 50,546 psi | 86% | 2769 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 52,837 psi | 90% | 2799 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 52,837 psi | 90% | 2795 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 52,243 psi | 89% | 2772 fps | 97.9% |
| IMR 4350 | <<locked>> | 94% | 51,329 psi | 87% | 2802 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 52,562 psi | 89% | 2802 fps | 97.9% |
| IMR 4831 | <<locked>> | 96% | 52,794 psi | 90% | 2861 fps | 99.7% |
| IMR 4895 | <<locked>> | 84% | 52,025 psi | 89% | 2835 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 51,924 psi | 88% | 2782 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 51,343 psi | 87% | 2733 fps | 99.9% |
| Lovex S062 | <<locked>> | 86% | 52,866 psi | 90% | 2792 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 52,214 psi | 89% | 2799 fps | 98.9% |
| Lovex S070 | <<locked>> | 92% | 49,821 psi | 85% | 2779 fps | 97.7% |
| Norma 201 | <<locked>> | 82% | 51,010 psi | 87% | 2756 fps | 100% |
| Norma 202 | <<locked>> | 82% | 51,663 psi | 88% | 2756 fps | 100% |
| Norma 203B | <<locked>> | 84% | 50,067 psi | 85% | 2792 fps | 99.9% |
| Norma 204 | <<locked>> | 94% | 51,517 psi | 88% | 2841 fps | 96% |
| Norma MRPᴾ | <<locked>> | 100% | 48,965 psi | 83% | 2904 fps | 97.3% |
| Norma URP | <<locked>> | 94% | 51,488 psi | 88% | 2858 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 84% | 50,256 psi | 86% | 2812 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 94% | 50,154 psi | 85% | 2851 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 62% | 1801 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 51,619 psi | 88% | 2792 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 50,807 psi | 86% | 2861 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 50,589 psi | 86% | 2900 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 52,011 psi | 89% | 2890 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 50,981 psi | 87% | 2913 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 84% | 51,517 psi | 88% | 2756 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 50,778 psi | 86% | 2792 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,692 psi | 88% | 2871 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 90% | 50,662 psi | 86% | 2769 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 52,214 psi | 89% | 2799 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 51,924 psi | 88% | 2782 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 52,866 psi | 90% | 2792 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 49,821 psi | 85% | 2779 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 52,344 psi | 89% | 2851 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 53,040 psi | 90% | 2808 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 50,444 psi | 86% | 2776 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,199 psi | 89% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 52,591 psi | 90% | 2697 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 51,967 psi | 88% | 2749 fps | 97.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,198 psi | 87% | 2864 fps | 96.4% |
| Somchem S335 | <<locked>> | 82% | 51,764 psi | 88% | 2694 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 52,823 psi | 90% | 2799 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 50,923 psi | 87% | 2789 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 49,792 psi | 85% | 2861 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,562 psi | 89% | 2851 fps | 97.5% |
| Vihtavuori N133 | <<locked>> | 82% | 52,620 psi | 90% | 2680 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 51,706 psi | 88% | 2723 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 51,924 psi | 88% | 2736 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 52,214 psi | 89% | 2769 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 50,270 psi | 86% | 2802 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 84% | 50,285 psi | 86% | 2730 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 52,736 psi | 90% | 2858 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,820 psi | 83% | 2854 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 50,009 psi | 85% | 2776 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 51,445 psi | 88% | 2864 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,276 psi | 67% | 2802 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 50,531 psi | 86% | 2785 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 2495 | <<locked>> | 80% | 45,905 psi | 78% | 2641 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,556 psi | 76% | 2621 fps | 95.4% |
| Accurate 3100 | <<locked>> | 94% | 37,652 psi | 64% | 2579 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 43,424 psi | 74% | 2638 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,343 psi | 55% | 2470 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 49,023 psi | 83% | 2756 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 41,495 psi | 71% | 2602 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 96% | 47,297 psi | 81% | 2785 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,875 psi | 76% | 2795 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,524 psi | 71% | 2628 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,599 psi | 76% | 2694 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,329 psi | 55% | 2484 fps | 95.4% |
| Alliant Reloder-17 | 47.8 gr | 80% | 36,114 psi | 61% | 2608 fps | 98.5% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,557 psi | 79% | 2776 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,224 psi | 48% | 2392 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,085 psi | 61% | 2612 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,679 psi | 59% | 2628 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,283 psi | 82% | 2762 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 41,626 psi | 71% | 2638 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 44,831 psi | 76% | 2664 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 42,235 psi | 72% | 2641 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 86% | 42,192 psi | 72% | 2690 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 86% | 45,513 psi | 77% | 2713 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 49,516 psi | 84% | 2766 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,776 psi | 51% | 2385 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,687 psi | 78% | 2740 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 44,556 psi | 76% | 2766 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,890 psi | 46% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,268 psi | 80% | 2713 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 49,501 psi | 84% | 2749 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,627 psi | 74% | 2638 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,035 psi | 78% | 2661 fps | 96.6% |
| IMR 4350 | <<locked>> | 88% | 42,540 psi | 72% | 2641 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,118 psi | 70% | 2589 fps | 95.1% |
| IMR 4831 | <<locked>> | 80% | 31,357 psi | 53% | 2431 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 45,745 psi | 78% | 2726 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 48,762 psi | 83% | 2733 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,327 psi | 82% | 2684 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 43,700 psi | 74% | 2638 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,085 psi | 61% | 2484 fps | 95.1% |
| Lovex S070 | <<locked>> | 86% | 41,495 psi | 71% | 2621 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 47,979 psi | 82% | 2703 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,298 psi | 82% | 2703 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,976 psi | 75% | 2684 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 48,080 psi | 82% | 2782 fps | 95.2% |
| Norma MRP | <<locked>> | 96% | 42,917 psi | 73% | 2782 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 32,518 psi | 55% | 2470 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 43,671 psi | 74% | 2697 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 38,580 psi | 66% | 2621 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,311 psi | 46% | 1611 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,380 psi | 72% | 2621 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,630 psi | 81% | 2805 fps | 99.5% |
| ReloadSwiss RS 60 | 47.8 gr | 80% | 38,406 psi | 65% | 2671 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,185 psi | 58% | 2539 fps | 95.7% |
| ReloadSwiss RS 70 | 51 gr | 84% | 36,419 psi | 62% | 2608 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 45,556 psi | 78% | 2654 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,160 psi | 67% | 2582 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 98% | 48,414 psi | 82% | 2815 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 86% | 44,831 psi | 76% | 2664 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,085 psi | 61% | 2484 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,762 psi | 83% | 2733 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,700 psi | 74% | 2638 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 41,495 psi | 71% | 2621 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,190 psi | 68% | 2631 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,588 psi | 84% | 2749 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,500 psi | 81% | 2726 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,008 psi | 83% | 2648 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,075 psi | 70% | 2513 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,277 psi | 69% | 2536 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,950 psi | 82% | 2808 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 48,718 psi | 83% | 2648 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,182 psi | 84% | 2740 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 39,755 psi | 68% | 2582 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 29,095 psi | 50% | 2421 fps | 97.5% |
| Somchem S385 | <<locked>> | 94% | 43,076 psi | 73% | 2684 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 49,429 psi | 84% | 2635 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,455 psi | 77% | 2631 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,905 psi | 78% | 2641 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,898 psi | 65% | 2520 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 33,881 psi | 58% | 2474 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 44,324 psi | 75% | 2631 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,446 psi | 57% | 2474 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 86% | 30,589 psi | 52% | 2467 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,330 psi | 57% | 2448 fps | 97.8% |
| Winchester 760 | <<locked>> | 86% | 42,192 psi | 72% | 2690 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,282 psi | 48% | 2470 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,282 psi | 80% | 2733 fps | 99.9% |
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 87 powders for .280 Rem. loaded with the .284 | 145gr | Prvi Partizan SP. Alliant Reloder-26 delivers the highest muzzle velocity at 2,953 fps; across all powders the maximum-charge window runs from 1,759 fps to 2,953 fps. Accurate 3100 gives the best case fill at 100 %, and 87 of the 87 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 145.0 gr projectile in 0.284" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-19, Alliant Reloder-23 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 | 145gr | Prvi Partizan SP 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.