Load Specifications
Load data in caliber .280 Rem. with .284 | 145gr | Speer Boat-Tail 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% | 52,214 psi | 89% | 2736 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 50,647 psi | 86% | 2730 fps | 96.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,267 psi | 79% | 2749 fps | 97.7% |
| Accurate 4064 | <<locked>> | 86% | 52,417 psi | 89% | 2785 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 52,228 psi | 89% | 2867 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 52,156 psi | 89% | 2808 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,127 psi | 90% | 2812 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 51,561 psi | 88% | 2920 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 52,837 psi | 90% | 2818 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 50,401 psi | 86% | 2785 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 50,546 psi | 86% | 2802 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 94% | 50,053 psi | 85% | 2871 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 90% | 50,691 psi | 86% | 2900 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,678 psi | 90% | 2887 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,758 psi | 74% | 2776 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,406 psi | 65% | 2671 fps | 96.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,501 psi | 84% | 2953 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 51,634 psi | 88% | 2818 fps | 99.7% |
| Bofors RP3 | <<locked>> | 86% | 50,691 psi | 86% | 2799 fps | 100% |
| Bofors RP7 | <<locked>> | 90% | 50,720 psi | 86% | 2772 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 86% | 51,256 psi | 87% | 2808 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 92% | 51,256 psi | 87% | 2861 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 90% | 51,793 psi | 88% | 2825 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 82% | 52,678 psi | 90% | 2818 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 50,082 psi | 85% | 2805 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 52,141 psi | 89% | 2848 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 51,445 psi | 88% | 2894 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,969 psi | 61% | 1759 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 50,343 psi | 86% | 2766 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 52,881 psi | 90% | 2802 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 52,620 psi | 90% | 2795 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 52,286 psi | 89% | 2772 fps | 97.9% |
| IMR 4350 | <<locked>> | 94% | 51,082 psi | 87% | 2799 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 52,344 psi | 89% | 2802 fps | 97.9% |
| IMR 4831 | <<locked>> | 96% | 52,895 psi | 90% | 2861 fps | 99.7% |
| IMR 4895 | <<locked>> | 84% | 51,808 psi | 88% | 2831 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 52,011 psi | 89% | 2785 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 51,416 psi | 88% | 2736 fps | 99.9% |
| Lovex S062 | <<locked>> | 86% | 52,634 psi | 90% | 2789 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 52,011 psi | 89% | 2795 fps | 98.9% |
| Lovex S070 | <<locked>> | 94% | 53,011 psi | 90% | 2835 fps | 98.3% |
| Norma 201 | <<locked>> | 82% | 51,068 psi | 87% | 2756 fps | 100% |
| Norma 202 | <<locked>> | 82% | 51,416 psi | 88% | 2753 fps | 100% |
| Norma 203B | <<locked>> | 84% | 49,850 psi | 85% | 2789 fps | 99.9% |
| Norma 204 | <<locked>> | 94% | 51,576 psi | 88% | 2844 fps | 96.1% |
| Norma MRPᴾ | <<locked>> | 100% | 49,008 psi | 83% | 2904 fps | 97.4% |
| Norma URP | <<locked>> | 94% | 51,285 psi | 87% | 2854 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 84% | 50,053 psi | 85% | 2812 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 94% | 50,256 psi | 86% | 2851 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,608 psi | 62% | 1801 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 51,430 psi | 88% | 2789 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 50,879 psi | 87% | 2864 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 50,386 psi | 86% | 2897 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 52,112 psi | 89% | 2894 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 51,053 psi | 87% | 2913 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 84% | 51,576 psi | 88% | 2756 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 50,560 psi | 86% | 2789 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,735 psi | 88% | 2874 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 90% | 50,720 psi | 86% | 2772 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 52,011 psi | 89% | 2795 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 52,011 psi | 89% | 2785 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 52,634 psi | 90% | 2789 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 53,011 psi | 90% | 2835 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 52,156 psi | 89% | 2848 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 53,098 psi | 90% | 2808 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 50,517 psi | 86% | 2779 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 51,967 psi | 88% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 52,678 psi | 90% | 2697 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 52,025 psi | 89% | 2749 fps | 97.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,242 psi | 87% | 2867 fps | 96.4% |
| Somchem S335 | <<locked>> | 82% | 51,779 psi | 88% | 2694 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 52,620 psi | 90% | 2795 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 50,981 psi | 87% | 2789 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 49,574 psi | 84% | 2858 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,373 psi | 89% | 2851 fps | 97.5% |
| Vihtavuori N133 | <<locked>> | 82% | 52,402 psi | 89% | 2677 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 51,474 psi | 88% | 2720 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 51,982 psi | 88% | 2736 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 52,243 psi | 89% | 2769 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 50,328 psi | 86% | 2802 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 84% | 50,343 psi | 86% | 2733 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 52,779 psi | 90% | 2861 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,617 psi | 83% | 2851 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 50,082 psi | 85% | 2779 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 51,547 psi | 88% | 2867 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,334 psi | 67% | 2802 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 50,328 psi | 86% | 2782 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% | 45,672 psi | 78% | 2635 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,367 psi | 76% | 2618 fps | 95.3% |
| Accurate 3100 | <<locked>> | 94% | 37,681 psi | 64% | 2582 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 43,236 psi | 74% | 2638 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,169 psi | 55% | 2467 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 48,820 psi | 83% | 2753 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 41,568 psi | 71% | 2605 fps | 98.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,933 psi | 76% | 2799 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 49,443 psi | 84% | 2766 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,568 psi | 71% | 2628 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,396 psi | 76% | 2694 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,372 psi | 55% | 2484 fps | 95.4% |
| Alliant Reloder-17 | 47.8 gr | 80% | 36,158 psi | 62% | 2612 fps | 98.5% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,383 psi | 79% | 2776 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,253 psi | 48% | 2392 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,172 psi | 62% | 2615 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,708 psi | 59% | 2628 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,341 psi | 82% | 2762 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 41,408 psi | 70% | 2635 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 44,643 psi | 76% | 2661 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 42,076 psi | 72% | 2638 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 86% | 42,018 psi | 72% | 2690 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 86% | 45,600 psi | 78% | 2713 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 49,298 psi | 84% | 2762 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,834 psi | 51% | 2385 fps | 96.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,759 psi | 78% | 2743 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 44,396 psi | 76% | 2762 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,687 psi | 45% | 1568 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,311 psi | 81% | 2713 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 49,559 psi | 84% | 2749 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,685 psi | 74% | 2638 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,108 psi | 78% | 2661 fps | 96.7% |
| IMR 4350 | <<locked>> | 88% | 42,366 psi | 72% | 2638 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,944 psi | 70% | 2585 fps | 95.1% |
| IMR 4831 | <<locked>> | 82% | 33,489 psi | 57% | 2484 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 45,527 psi | 78% | 2720 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 48,530 psi | 83% | 2730 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,399 psi | 82% | 2684 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 43,772 psi | 75% | 2641 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 35,955 psi | 61% | 2480 fps | 95.1% |
| Lovex S070 | <<locked>> | 86% | 41,307 psi | 70% | 2618 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 47,747 psi | 81% | 2700 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,370 psi | 82% | 2707 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,787 psi | 75% | 2680 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 48,153 psi | 82% | 2785 fps | 95.2% |
| Norma MRP | <<locked>> | 96% | 42,699 psi | 73% | 2782 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 32,401 psi | 55% | 2467 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 43,714 psi | 74% | 2700 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 38,595 psi | 66% | 2625 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,108 psi | 46% | 1608 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,424 psi | 72% | 2625 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,413 psi | 81% | 2805 fps | 99.5% |
| ReloadSwiss RS 60 | 47.8 gr | 80% | 38,464 psi | 65% | 2674 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,200 psi | 58% | 2543 fps | 95.7% |
| ReloadSwiss RS 70 | 50.9 gr | 84% | 36,260 psi | 62% | 2602 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 45,571 psi | 78% | 2657 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 38,972 psi | 66% | 2579 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 98% | 48,472 psi | 83% | 2815 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 86% | 44,643 psi | 76% | 2661 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,955 psi | 61% | 2480 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,530 psi | 83% | 2730 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,772 psi | 75% | 2641 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 41,307 psi | 70% | 2618 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,001 psi | 68% | 2631 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,617 psi | 84% | 2753 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,297 psi | 81% | 2723 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,066 psi | 84% | 2648 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,147 psi | 70% | 2516 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,089 psi | 68% | 2533 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 48,008 psi | 82% | 2808 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 48,501 psi | 83% | 2644 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,226 psi | 84% | 2743 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 39,581 psi | 67% | 2582 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 29,153 psi | 50% | 2425 fps | 97.5% |
| Somchem S385 | <<locked>> | 94% | 43,105 psi | 73% | 2687 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 49,501 psi | 84% | 2638 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,513 psi | 77% | 2631 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,701 psi | 78% | 2638 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,710 psi | 64% | 2516 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 33,736 psi | 57% | 2474 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 44,121 psi | 75% | 2631 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,286 psi | 57% | 2470 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 86% | 30,603 psi | 52% | 2470 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,373 psi | 57% | 2448 fps | 97.8% |
| Winchester 760 | <<locked>> | 86% | 42,235 psi | 72% | 2694 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,355 psi | 48% | 2474 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,094 psi | 80% | 2730 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 107 powders for .280 Rem. loaded with the .284 | 145gr | Speer Boat-Tail. 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 107 of the 107 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 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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 | Speer Boat-Tail they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.