Load Specifications
Bullet:.284 | 160gr | THAC EDH
Bullet Manufacturer:THAC
Bullet Weight:160 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:.280 Ackley Improved load data
Case Length (l3):2.54"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:74 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:8.5
Load data in caliber .280 Ackley Improved with .284 | 160gr | THAC EDH bullet and 112 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-16.
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.
A valid access license is required to use the Personalized Load Calculator.
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% | 55,898 psi | 86% | 2651 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 57,537 psi | 89% | 2723 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,415 psi | 78% | 2703 fps | 99.3% |
| Accurate 4064 | <<locked>> | 86% | 56,159 psi | 86% | 2703 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,797 psi | 87% | 2808 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 55,187 psi | 85% | 2897 fps | 97.4% |
| ADI AR 2206H | <<locked>> | 84% | 58,784 psi | 90% | 2779 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,362 psi | 87% | 2733 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 57,609 psi | 89% | 2848 fps | 98.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 51,605 psi | 79% | 2779 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,508 psi | 88% | 2723 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,521 psi | 85% | 2854 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 57,537 psi | 89% | 2841 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 57,174 psi | 88% | 2756 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,566 psi | 89% | 2782 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 57,392 psi | 88% | 2861 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,013 psi | 85% | 2835 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,681 psi | 87% | 2835 fps | 98.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,125 psi | 77% | 2779 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,384 psi | 73% | 2723 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,437 psi | 64% | 2644 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,375 psi | 84% | 2910 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,129 psi | 85% | 2749 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,050 psi | 71% | 2707 fps | 96.4% |
| Bofors RP3 | <<locked>> | 88% | 57,986 psi | 89% | 2776 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,125 psi | 77% | 2779 fps | 97.5% |
| Bofors RP7 | <<locked>> | 92% | 57,464 psi | 88% | 2759 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 58,755 psi | 90% | 2700 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,508 psi | 88% | 2756 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 58,682 psi | 90% | 2795 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 55,303 psi | 85% | 2805 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 90% | 55,419 psi | 85% | 2769 fps | 98.4% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 55,434 psi | 85% | 2789 fps | 96.3% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 54,143 psi | 83% | 2769 fps | 96% |
| Hodgdon H4895 | <<locked>> | 82% | 55,956 psi | 86% | 2740 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 57,566 psi | 89% | 2782 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,941 psi | 86% | 2772 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,506 psi | 85% | 2844 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,129 psi | 56% | 1677 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,029 psi | 88% | 2740 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,724 psi | 87% | 2717 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,811 psi | 86% | 2717 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 58,726 psi | 90% | 2753 fps | 99.5% |
| IMR 4350 | <<locked>> | 96% | 58,189 psi | 90% | 2789 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,622 psi | 86% | 2736 fps | 99.2% |
| IMR 4831 | <<locked>> | 96% | 56,869 psi | 87% | 2795 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,274 psi | 85% | 2756 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 57,072 psi | 88% | 2776 fps | 96.8% |
| IMR 8208 XBR | <<locked>> | 82% | 57,508 psi | 88% | 2723 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,608 psi | 86% | 2703 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,856 psi | 89% | 2707 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,941 psi | 86% | 2710 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,521 psi | 85% | 2730 fps | 99.8% |
| Lovex S070 | <<locked>> | 94% | 56,797 psi | 87% | 2772 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,032 psi | 65% | 2562 fps | 97.9% |
| Norma 201 | <<locked>> | 84% | 57,508 psi | 88% | 2720 fps | 100% |
| Norma 202 | <<locked>> | 84% | 58,378 psi | 90% | 2720 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,840 psi | 87% | 2769 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,376 psi | 85% | 2792 fps | 98% |
| Norma MRPᴾ | <<locked>> | 100% | 53,330 psi | 82% | 2864 fps | 99.1% |
| Norma URP | <<locked>> | 94% | 55,332 psi | 85% | 2792 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 57,479 psi | 88% | 2792 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 57,595 psi | 89% | 2844 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 43,932 psi | 68% | 2648 fps | 96.5% |
| Ramshot TAC | <<locked>> | 82% | 57,595 psi | 89% | 2756 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,885 psi | 89% | 2769 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,854 psi | 57% | 1719 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 58,610 psi | 90% | 2779 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 58,682 psi | 90% | 2848 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 58,494 psi | 90% | 2881 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,434 psi | 87% | 2831 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,984 psi | 85% | 2858 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 40,263 psi | 62% | 2651 fps | 96.2% |
| Rottweil R 901 | <<locked>> | 82% | 58,363 psi | 90% | 2697 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 58,088 psi | 89% | 2720 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 58,160 psi | 89% | 2772 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 55,753 psi | 86% | 2762 fps | 97.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,927 psi | 86% | 2822 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 92% | 57,464 psi | 88% | 2759 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,521 psi | 85% | 2730 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,608 psi | 86% | 2703 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,941 psi | 86% | 2710 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 56,797 psi | 87% | 2772 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,970 psi | 86% | 2779 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,623 psi | 87% | 2740 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,377 psi | 88% | 2756 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 58,653 psi | 90% | 2654 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,796 psi | 86% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,230 psi | 85% | 2684 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,434 psi | 85% | 2815 fps | 98.3% |
| Somchem S335 | <<locked>> | 84% | 58,030 psi | 89% | 2651 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,101 psi | 86% | 2723 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 57,943 psi | 89% | 2762 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 57,725 psi | 89% | 2759 fps | 96.6% |
| Somchem S365 | <<locked>> | 98% | 57,972 psi | 89% | 2841 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 56,507 psi | 87% | 2795 fps | 99% |
| Vihtavuori N133 | <<locked>> | 82% | 55,535 psi | 85% | 2592 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 58,349 psi | 90% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 58,726 psi | 90% | 2697 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,898 psi | 86% | 2694 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,725 psi | 89% | 2789 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,791 psi | 75% | 2667 fps | 97.5% |
| Vihtavuori N530 | <<locked>> | 82% | 58,015 psi | 89% | 2723 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 56,913 psi | 88% | 2697 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 56,623 psi | 87% | 2792 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,997 psi | 82% | 2795 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 53,882 psi | 83% | 2851 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 57,421 psi | 88% | 2759 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,303 psi | 85% | 2805 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,801 psi | 66% | 2772 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 57,435 psi | 88% | 2762 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,127 psi | 82% | 2736 fps | 97.7% |
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% | 49,139 psi | 76% | 2562 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,108 psi | 72% | 2559 fps | 97.3% |
| Accurate 3100 | <<locked>> | 88% | 33,663 psi | 52% | 2388 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 46,543 psi | 72% | 2566 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,157 psi | 54% | 2431 fps | 97.7% |
| Accurate High Country | <<locked>> | 96% | 47,848 psi | 74% | 2772 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 52,040 psi | 80% | 2680 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,280 psi | 68% | 2543 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 44,657 psi | 69% | 2631 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 98% | 48,370 psi | 74% | 2723 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 54,085 psi | 83% | 2677 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,240 psi | 74% | 2740 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 41,785 psi | 64% | 2572 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,643 psi | 69% | 2566 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,601 psi | 73% | 2631 fps | 99.9% |
| Alliant Reloder-16 | 43.8 gr | 80% | 34,563 psi | 53% | 2441 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,972 psi | 60% | 2562 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,932 psi | 68% | 2618 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 41,205 psi | 63% | 2612 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,266 psi | 39% | 2208 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 92% | 32,430 psi | 50% | 2425 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 84% | 30,647 psi | 47% | 2421 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,634 psi | 79% | 2697 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 43,236 psi | 67% | 2651 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 44,701 psi | 69% | 2575 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 41,205 psi | 63% | 2612 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 39,624 psi | 61% | 2454 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 55,361 psi | 85% | 2654 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,780 psi | 83% | 2707 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 45,179 psi | 70% | 2585 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 37,246 psi | 57% | 2477 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 82% | 42,830 psi | 66% | 2549 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 98% | 51,953 psi | 80% | 2733 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 50,734 psi | 78% | 2713 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 52,605 psi | 81% | 2690 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,039 psi | 49% | 2343 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,081 psi | 76% | 2674 fps | 100% |
| Hodgdon Superformance | 51.1 gr | 82% | 38,696 psi | 60% | 2539 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,180 psi | 42% | 1499 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,169 psi | 77% | 2641 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,200 psi | 82% | 2671 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,586 psi | 72% | 2572 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,675 psi | 75% | 2598 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 40,089 psi | 62% | 2484 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,060 psi | 63% | 2484 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 33,910 psi | 52% | 2388 fps | 97.3% |
| IMR 4895 | <<locked>> | 80% | 48,805 psi | 75% | 2657 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 50,502 psi | 78% | 2674 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 54,085 psi | 83% | 2677 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 52,228 psi | 80% | 2657 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,256 psi | 79% | 2612 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,746 psi | 72% | 2572 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,464 psi | 59% | 2434 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 36,709 psi | 56% | 2415 fps | 95.5% |
| Lovex S071 | <<locked>> | 94% | 34,693 psi | 53% | 2411 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 50,894 psi | 78% | 2628 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,590 psi | 79% | 2628 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,949 psi | 72% | 2618 fps | 100% |
| Norma 204 | <<locked>> | 88% | 45,194 psi | 70% | 2621 fps | 95.8% |
| Norma MRP | <<locked>> | 90% | 37,855 psi | 58% | 2569 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 35,128 psi | 54% | 2431 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 80% | 46,920 psi | 72% | 2635 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 34,127 psi | 53% | 2415 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 98% | 40,857 psi | 63% | 2585 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 54,012 psi | 83% | 2703 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 54,172 psi | 83% | 2717 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,659 psi | 43% | 1539 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,208 psi | 70% | 2569 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,285 psi | 79% | 2743 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,408 psi | 64% | 2618 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,693 psi | 53% | 2444 fps | 97.2% |
| ReloadSwiss RS 70 | 47.9 gr | 80% | 34,055 psi | 52% | 2448 fps | 96.4% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 37,623 psi | 58% | 2589 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 54,940 psi | 85% | 2651 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 48,544 psi | 75% | 2585 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,047 psi | 65% | 2523 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 49,168 psi | 76% | 2657 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 92% | 42,873 psi | 66% | 2602 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 39,624 psi | 61% | 2454 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,464 psi | 59% | 2434 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,228 psi | 80% | 2657 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,746 psi | 72% | 2572 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,709 psi | 56% | 2415 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,149 psi | 66% | 2575 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,968 psi | 81% | 2687 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,560 psi | 78% | 2657 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,692 psi | 80% | 2562 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,540 psi | 67% | 2438 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,695 psi | 58% | 2379 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 42,453 psi | 65% | 2598 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 51,488 psi | 79% | 2562 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,504 psi | 81% | 2671 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,438 psi | 65% | 2523 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 50,560 psi | 78% | 2651 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 31,531 psi | 49% | 2385 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 38,276 psi | 59% | 2480 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 52,170 psi | 80% | 2546 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,457 psi | 75% | 2549 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,805 psi | 75% | 2562 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,509 psi | 62% | 2457 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,521 psi | 56% | 2431 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 40,277 psi | 62% | 2513 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 54,491 psi | 84% | 2677 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 47,181 psi | 73% | 2559 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,042 psi | 55% | 2431 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 80% | 27,456 psi | 42% | 2280 fps | 95.3% |
| Vihtavuori N560 | <<locked>> | 98% | 50,270 psi | 77% | 2792 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,708 psi | 55% | 2402 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 37,246 psi | 57% | 2477 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,324 psi | 39% | 2283 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,256 psi | 77% | 2657 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 43,265 psi | 67% | 2575 fps | 95.4% |
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 112 powders for .280 Ackley Improved loaded with the .284 | 160gr | THAC EDH. Alliant Reloder-26 delivers the highest muzzle velocity at 2,910 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,910 fps. Accurate 3100 gives the best case fill at 100 %, and 112 of the 112 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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, Hodgdon Superformance, Alliant Reloder-16 rank at the top here: for .280 Ackley Improved with the .284 | 160gr | THAC EDH 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.