Load Specifications
Bullet:.284 | 160gr | Brenneke TAG
Bullet Manufacturer:Brenneke
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 | Brenneke TAG 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% | 58,581 psi | 90% | 2710 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,507 psi | 87% | 2746 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,128 psi | 83% | 2785 fps | 99.8% |
| Accurate 4064 | <<locked>> | 84% | 55,405 psi | 85% | 2720 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,318 psi | 87% | 2831 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,536 psi | 87% | 2930 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 82% | 58,189 psi | 90% | 2802 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 55,941 psi | 86% | 2759 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,798 psi | 89% | 2884 fps | 98.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,303 psi | 85% | 2877 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,230 psi | 85% | 2877 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 57,754 psi | 89% | 2881 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,434 psi | 87% | 2776 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,869 psi | 87% | 2802 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,522 psi | 88% | 2890 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,955 psi | 85% | 2858 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,942 psi | 88% | 2871 fps | 98.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,215 psi | 83% | 2874 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,111 psi | 79% | 2802 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,353 psi | 68% | 2733 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,027 psi | 85% | 2943 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 58,407 psi | 90% | 2825 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,385 psi | 76% | 2792 fps | 97.7% |
| Bofors RP3 | <<locked>> | 86% | 57,522 psi | 88% | 2795 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,215 psi | 83% | 2874 fps | 98.6% |
| Bofors RP7 | <<locked>> | 90% | 56,724 psi | 87% | 2785 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 86% | 57,783 psi | 89% | 2815 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,230 psi | 85% | 2835 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 90% | 58,494 psi | 90% | 2848 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 98% | 55,317 psi | 85% | 2822 fps | 96.9% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 58,160 psi | 89% | 2864 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,783 psi | 89% | 2812 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,608 psi | 86% | 2795 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,265 psi | 67% | 2762 fps | 97% |
| Hodgdon Superformance | <<locked>> | 90% | 55,434 psi | 85% | 2874 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,405 psi | 56% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,246 psi | 87% | 2759 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,303 psi | 85% | 2740 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,986 psi | 89% | 2779 fps | 99.7% |
| IMR 4350 | <<locked>> | 94% | 57,740 psi | 89% | 2818 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 58,624 psi | 90% | 2812 fps | 99.7% |
| IMR 4831 | <<locked>> | 94% | 56,927 psi | 88% | 2825 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 58,363 psi | 90% | 2828 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 57,058 psi | 88% | 2812 fps | 97.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,663 psi | 81% | 2851 fps | 97.2% |
| Lovex D073.6 | <<locked>> | 82% | 58,682 psi | 90% | 2772 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 56,753 psi | 87% | 2723 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,376 psi | 85% | 2733 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 58,392 psi | 90% | 2805 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 56,173 psi | 86% | 2795 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,831 psi | 69% | 2638 fps | 98.8% |
| Norma 201 | <<locked>> | 82% | 56,623 psi | 87% | 2743 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,276 psi | 88% | 2733 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,130 psi | 86% | 2789 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,216 psi | 85% | 2822 fps | 98.4% |
| Norma MRPᴾ | <<locked>> | 100% | 57,566 psi | 89% | 2953 fps | 99.8% |
| Norma URP | <<locked>> | 94% | 58,798 psi | 90% | 2867 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,029 psi | 88% | 2815 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,895 psi | 81% | 2864 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 94% | 57,682 psi | 89% | 2874 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,152 psi | 73% | 2740 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,043 psi | 57% | 1755 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,827 psi | 89% | 2802 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 58,131 psi | 89% | 2871 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 58,436 psi | 90% | 2900 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,405 psi | 87% | 2858 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,013 psi | 85% | 2887 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,120 psi | 66% | 2753 fps | 98% |
| Rottweil R 902 | <<locked>> | 84% | 57,130 psi | 88% | 2740 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 57,377 psi | 88% | 2789 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,506 psi | 85% | 2795 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 98% | 55,999 psi | 86% | 2854 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 90% | 56,724 psi | 87% | 2785 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 58,392 psi | 90% | 2805 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 82% | 58,682 psi | 90% | 2772 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 55,376 psi | 85% | 2733 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,173 psi | 86% | 2795 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,608 psi | 86% | 2802 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,594 psi | 87% | 2772 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,305 psi | 88% | 2667 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 58,523 psi | 90% | 2674 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 58,436 psi | 90% | 2766 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,521 psi | 85% | 2848 fps | 98.8% |
| Somchem S335 | <<locked>> | 82% | 57,130 psi | 88% | 2667 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,246 psi | 88% | 2782 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 57,508 psi | 88% | 2792 fps | 97.2% |
| Somchem S365 | <<locked>> | 96% | 58,566 psi | 90% | 2871 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,536 psi | 87% | 2828 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 82% | 57,899 psi | 89% | 2648 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,769 psi | 89% | 2697 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 58,044 psi | 89% | 2717 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 58,784 psi | 90% | 2759 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,290 psi | 88% | 2812 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,359 psi | 81% | 2753 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 84% | 56,202 psi | 86% | 2713 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,536 psi | 87% | 2818 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,043 psi | 88% | 2874 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,812 psi | 89% | 2946 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,188 psi | 88% | 2782 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,230 psi | 85% | 2835 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,166 psi | 71% | 2864 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,840 psi | 87% | 2782 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,058 psi | 88% | 2828 fps | 98.8% |
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% | 51,300 psi | 79% | 2618 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,545 psi | 76% | 2638 fps | 98.3% |
| Accurate 3100 | <<locked>> | 86% | 33,286 psi | 51% | 2402 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 48,675 psi | 75% | 2625 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,999 psi | 57% | 2497 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 96% | 49,153 psi | 76% | 2808 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 54,346 psi | 84% | 2746 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,267 psi | 71% | 2608 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 41,365 psi | 64% | 2595 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 94% | 45,092 psi | 69% | 2697 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,343 psi | 79% | 2818 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 41,481 psi | 64% | 2598 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,615 psi | 72% | 2628 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,821 psi | 77% | 2697 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,448 psi | 56% | 2513 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,263 psi | 63% | 2635 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,017 psi | 63% | 2589 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,089 psi | 63% | 2638 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,411 psi | 41% | 2270 fps | 96.4% |
| Alliant Reloder-25 | <<locked>> | 90% | 31,981 psi | 49% | 2444 fps | 95.7% |
| Alliant Reloder-26 | 53.6 gr | 82% | 30,211 psi | 46% | 2434 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 54,346 psi | 84% | 2766 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 40,538 psi | 62% | 2625 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 46,992 psi | 72% | 2641 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,089 psi | 63% | 2638 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 41,205 psi | 63% | 2516 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 80% | 47,355 psi | 73% | 2654 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 39,262 psi | 60% | 2549 fps | 96.7% |
| Hodgdon H4350 | <<locked>> | 80% | 42,351 psi | 65% | 2572 fps | 96.2% |
| Hodgdon H4831 | <<locked>> | 94% | 48,167 psi | 74% | 2703 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 47,369 psi | 73% | 2690 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,939 psi | 52% | 2411 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,880 psi | 80% | 2743 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,567 psi | 62% | 2700 fps | 96% |
| Hodgdon Superformance | 53.9 gr | 80% | 38,145 psi | 59% | 2556 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,151 psi | 42% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,794 psi | 81% | 2710 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,646 psi | 75% | 2641 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,908 psi | 78% | 2671 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 37,072 psi | 57% | 2448 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,917 psi | 66% | 2552 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 35,679 psi | 55% | 2454 fps | 98.2% |
| IMR 4895 | <<locked>> | 80% | 51,140 psi | 79% | 2723 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,007 psi | 72% | 2648 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 96% | 45,861 psi | 71% | 2726 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 80% | 54,737 psi | 84% | 2720 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 53,301 psi | 82% | 2674 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,762 psi | 75% | 2635 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,205 psi | 62% | 2500 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 38,377 psi | 59% | 2480 fps | 96.6% |
| Lovex S071 | <<locked>> | 90% | 32,155 psi | 49% | 2375 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 53,142 psi | 82% | 2690 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,766 psi | 83% | 2687 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,153 psi | 76% | 2684 fps | 100% |
| Norma 204 | <<locked>> | 84% | 41,727 psi | 64% | 2585 fps | 95.4% |
| Norma MRP | <<locked>> | 86% | 35,201 psi | 54% | 2533 fps | 95% |
| Norma URP | <<locked>> | 80% | 37,043 psi | 57% | 2497 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 49,705 psi | 76% | 2707 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 45,774 psi | 70% | 2736 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 35,882 psi | 55% | 2484 fps | 96.5% |
| Ramshot Magnum | <<locked>> | 94% | 37,666 psi | 58% | 2549 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,586 psi | 42% | 1568 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,442 psi | 73% | 2638 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 54,157 psi | 83% | 2812 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,903 psi | 68% | 2687 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,028 psi | 57% | 2520 fps | 98.3% |
| ReloadSwiss RS 70 | 51.8 gr | 80% | 35,911 psi | 55% | 2526 fps | 97.7% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,405 psi | 58% | 2618 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 50,560 psi | 78% | 2644 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,106 psi | 68% | 2589 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 45,730 psi | 70% | 2631 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 88% | 40,030 psi | 62% | 2572 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 41,205 psi | 63% | 2516 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,205 psi | 62% | 2500 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 54,737 psi | 84% | 2720 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,762 psi | 75% | 2635 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,377 psi | 59% | 2480 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,426 psi | 70% | 2641 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,895 psi | 81% | 2720 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,983 psi | 83% | 2625 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,643 psi | 70% | 2497 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,175 psi | 60% | 2444 fps | 96.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 39,668 psi | 61% | 2569 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 53,737 psi | 83% | 2625 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,556 psi | 69% | 2589 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,241 psi | 77% | 2680 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 33,533 psi | 52% | 2454 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 38,087 psi | 59% | 2503 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 54,621 psi | 84% | 2608 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,952 psi | 78% | 2608 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,126 psi | 79% | 2625 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,482 psi | 65% | 2520 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,406 psi | 59% | 2497 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 92% | 39,943 psi | 61% | 2533 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 49,385 psi | 76% | 2618 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,913 psi | 58% | 2497 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 29,095 psi | 45% | 2343 fps | 96.5% |
| Vihtavuori N560 | <<locked>> | 94% | 46,905 psi | 72% | 2762 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,565 psi | 58% | 2467 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 39,479 psi | 61% | 2552 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 82% | 24,801 psi | 38% | 2297 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,084 psi | 82% | 2730 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 40,103 psi | 62% | 2543 fps | 95.1% |
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 | Brenneke TAG. Norma MRP delivers the highest muzzle velocity at 2,953 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,953 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 | Brenneke TAG 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.