Load Specifications
Bullet Manufacturer:Reichenberg
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:1:11.0
Load data in caliber .280 Ackley Improved with .284 | 160gr | Reichenberg Mag Drückjagd bullet and 103 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-26 and Hodgdon Superformance.
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% | 58,421 psi | 90% | 2707 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,391 psi | 87% | 2743 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,012 psi | 83% | 2782 fps | 99.8% |
| Accurate 4064 | <<locked>> | 84% | 55,288 psi | 85% | 2717 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,202 psi | 86% | 2828 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,463 psi | 87% | 2927 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 82% | 58,059 psi | 89% | 2799 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 55,811 psi | 86% | 2759 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,696 psi | 89% | 2884 fps | 98.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,230 psi | 85% | 2877 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,100 psi | 85% | 2874 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,304 psi | 87% | 2776 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,739 psi | 87% | 2799 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,406 psi | 88% | 2887 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,824 psi | 84% | 2854 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,840 psi | 87% | 2867 fps | 98.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,128 psi | 83% | 2871 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,024 psi | 78% | 2799 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,280 psi | 68% | 2733 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,578 psi | 84% | 2936 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 58,320 psi | 90% | 2822 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,298 psi | 76% | 2792 fps | 97.7% |
| Bofors RP3 | <<locked>> | 86% | 57,392 psi | 88% | 2792 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,128 psi | 83% | 2871 fps | 98.6% |
| Bofors RP7 | <<locked>> | 90% | 56,608 psi | 87% | 2782 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 86% | 57,653 psi | 89% | 2812 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 58,798 psi | 90% | 2887 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 90% | 58,378 psi | 90% | 2844 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 98% | 55,216 psi | 85% | 2818 fps | 96.9% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 58,073 psi | 89% | 2861 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 82% | 58,711 psi | 90% | 2805 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,667 psi | 89% | 2808 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,477 psi | 85% | 2792 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,207 psi | 66% | 2759 fps | 96.9% |
| Hodgdon Superformance | <<locked>> | 90% | 55,332 psi | 85% | 2871 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,477 psi | 56% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,101 psi | 86% | 2759 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 58,798 psi | 90% | 2789 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,870 psi | 89% | 2776 fps | 99.7% |
| IMR 4350 | <<locked>> | 94% | 57,638 psi | 89% | 2815 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 58,523 psi | 90% | 2812 fps | 99.7% |
| IMR 4831 | <<locked>> | 94% | 56,811 psi | 87% | 2822 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 58,247 psi | 90% | 2825 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,985 psi | 88% | 2808 fps | 97.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,591 psi | 81% | 2848 fps | 97.1% |
| Lovex D073.6 | <<locked>> | 82% | 58,537 psi | 90% | 2769 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 56,623 psi | 87% | 2720 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,245 psi | 85% | 2730 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 58,291 psi | 90% | 2802 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 56,115 psi | 86% | 2795 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,730 psi | 69% | 2635 fps | 98.8% |
| Norma 201 | <<locked>> | 82% | 56,492 psi | 87% | 2740 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,464 psi | 88% | 2736 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,028 psi | 86% | 2785 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,085 psi | 85% | 2818 fps | 98.4% |
| Norma MRPᴾ | <<locked>> | 100% | 57,421 psi | 88% | 2949 fps | 99.7% |
| Norma URP | <<locked>> | 94% | 58,682 psi | 90% | 2867 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 56,913 psi | 88% | 2812 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,794 psi | 81% | 2861 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 94% | 57,566 psi | 89% | 2874 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,094 psi | 72% | 2740 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,898 psi | 57% | 1752 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,711 psi | 89% | 2799 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 58,044 psi | 89% | 2867 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 58,305 psi | 90% | 2900 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,304 psi | 87% | 2854 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,926 psi | 85% | 2884 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,076 psi | 66% | 2753 fps | 98% |
| Rottweil R 902 | <<locked>> | 84% | 57,290 psi | 88% | 2740 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 57,276 psi | 88% | 2785 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,419 psi | 85% | 2792 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 98% | 55,912 psi | 86% | 2851 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 90% | 56,608 psi | 87% | 2782 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 58,291 psi | 90% | 2802 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 82% | 58,537 psi | 90% | 2769 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 55,245 psi | 85% | 2730 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,115 psi | 86% | 2795 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,506 psi | 85% | 2799 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,463 psi | 87% | 2772 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,479 psi | 88% | 2671 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 58,392 psi | 90% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 58,320 psi | 90% | 2762 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,434 psi | 85% | 2848 fps | 98.7% |
| Somchem S335 | <<locked>> | 82% | 57,029 psi | 88% | 2664 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,406 psi | 88% | 2785 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 57,435 psi | 88% | 2792 fps | 97.2% |
| Somchem S365 | <<locked>> | 96% | 58,450 psi | 90% | 2867 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,449 psi | 87% | 2828 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 82% | 58,059 psi | 89% | 2651 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,609 psi | 89% | 2697 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 57,914 psi | 89% | 2713 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 58,668 psi | 90% | 2756 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,174 psi | 88% | 2808 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,272 psi | 80% | 2749 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 84% | 56,086 psi | 86% | 2713 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,434 psi | 87% | 2818 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,927 psi | 88% | 2874 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,667 psi | 89% | 2943 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,101 psi | 88% | 2779 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,129 psi | 85% | 2831 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,021 psi | 71% | 2861 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,710 psi | 87% | 2779 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,985 psi | 88% | 2828 fps | 98.7% |
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% | 51,198 psi | 79% | 2615 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,472 psi | 76% | 2635 fps | 98.2% |
| Accurate 3100 | <<locked>> | 86% | 33,199 psi | 51% | 2398 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 48,544 psi | 75% | 2621 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,115 psi | 57% | 2500 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 96% | 48,776 psi | 75% | 2799 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 54,520 psi | 84% | 2746 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,151 psi | 71% | 2605 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 41,263 psi | 63% | 2595 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 94% | 45,005 psi | 69% | 2697 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,242 psi | 79% | 2815 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,746 psi | 72% | 2631 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,966 psi | 77% | 2697 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,332 psi | 56% | 2510 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,162 psi | 63% | 2631 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 40,930 psi | 63% | 2589 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,002 psi | 63% | 2635 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,353 psi | 41% | 2267 fps | 96.3% |
| Alliant Reloder-25 | <<locked>> | 90% | 31,908 psi | 49% | 2441 fps | 95.6% |
| Alliant Reloder-26 | 53.5 gr | 82% | 30,139 psi | 46% | 2431 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 54,534 psi | 84% | 2769 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 40,451 psi | 62% | 2621 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 46,862 psi | 72% | 2638 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,002 psi | 63% | 2635 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 41,336 psi | 64% | 2520 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 47,268 psi | 73% | 2651 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 39,160 psi | 60% | 2546 fps | 96.7% |
| Hodgdon H4350 | <<locked>> | 80% | 42,250 psi | 65% | 2569 fps | 96.1% |
| Hodgdon H4831 | <<locked>> | 94% | 48,080 psi | 74% | 2700 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 47,282 psi | 73% | 2687 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 55,129 psi | 85% | 2756 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,823 psi | 52% | 2408 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,750 psi | 80% | 2740 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,480 psi | 62% | 2694 fps | 95.9% |
| Hodgdon Superformance | 53.8 gr | 80% | 38,043 psi | 59% | 2556 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,209 psi | 42% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,663 psi | 81% | 2707 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,544 psi | 75% | 2638 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,821 psi | 78% | 2667 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 36,985 psi | 57% | 2448 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,844 psi | 66% | 2549 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 35,607 psi | 55% | 2451 fps | 98.2% |
| IMR 4895 | <<locked>> | 80% | 51,256 psi | 79% | 2723 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 46,920 psi | 72% | 2644 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 96% | 45,774 psi | 70% | 2723 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 80% | 54,592 psi | 84% | 2717 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 53,214 psi | 82% | 2671 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,631 psi | 75% | 2631 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,132 psi | 62% | 2497 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 38,276 psi | 59% | 2477 fps | 96.6% |
| Lovex S071 | <<locked>> | 90% | 32,242 psi | 50% | 2375 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 53,011 psi | 82% | 2690 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,925 psi | 83% | 2687 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,313 psi | 76% | 2684 fps | 100% |
| Norma 204 | <<locked>> | 84% | 41,655 psi | 64% | 2582 fps | 95.4% |
| Norma MRP | <<locked>> | 86% | 35,114 psi | 54% | 2530 fps | 95% |
| Norma URP | <<locked>> | 80% | 36,941 psi | 57% | 2493 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 49,574 psi | 76% | 2703 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 45,687 psi | 70% | 2733 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 35,795 psi | 55% | 2480 fps | 96.5% |
| Ramshot Magnum | <<locked>> | 94% | 37,579 psi | 58% | 2546 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,644 psi | 43% | 1568 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,326 psi | 73% | 2638 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 54,027 psi | 83% | 2812 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,787 psi | 67% | 2684 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,941 psi | 57% | 2520 fps | 98.2% |
| ReloadSwiss RS 70 | 51.7 gr | 80% | 35,839 psi | 55% | 2523 fps | 97.6% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,333 psi | 57% | 2615 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 50,459 psi | 78% | 2644 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,976 psi | 68% | 2585 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 45,876 psi | 71% | 2635 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 88% | 39,929 psi | 61% | 2569 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 41,336 psi | 64% | 2520 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,132 psi | 62% | 2497 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 54,592 psi | 84% | 2717 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,631 psi | 75% | 2631 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,276 psi | 59% | 2477 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,295 psi | 70% | 2638 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,779 psi | 81% | 2720 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,853 psi | 83% | 2621 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,513 psi | 70% | 2497 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,320 psi | 60% | 2444 fps | 96.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 39,552 psi | 61% | 2562 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 53,592 psi | 82% | 2621 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,425 psi | 68% | 2585 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,169 psi | 77% | 2680 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 33,431 psi | 51% | 2454 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 37,985 psi | 58% | 2500 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 54,476 psi | 84% | 2605 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,792 psi | 78% | 2605 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,010 psi | 78% | 2621 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,380 psi | 65% | 2516 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,551 psi | 59% | 2500 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 92% | 39,842 psi | 61% | 2533 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 49,269 psi | 76% | 2618 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,797 psi | 58% | 2497 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 28,993 psi | 45% | 2339 fps | 96.4% |
| Vihtavuori N560 | <<locked>> | 94% | 46,833 psi | 72% | 2759 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,666 psi | 58% | 2470 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 39,363 psi | 61% | 2552 fps | 96.7% |
| Winchester StaBALL HD | <<locked>> | 82% | 24,729 psi | 38% | 2293 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,968 psi | 81% | 2726 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 40,016 psi | 62% | 2539 fps | 95% |
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 103 powders for .280 Ackley Improved loaded with the .284 | 160gr | Reichenberg Mag Drückjagd. Norma MRP delivers the highest muzzle velocity at 2,949 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,949 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 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 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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-26, Hodgdon Superformance rank at the top here: for .280 Ackley Improved with the .284 | 160gr | Reichenberg Mag Drückjagd 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.