Load Specifications
Bullet:.284 | 161gr | SUS-TAC LRT
Bullet Manufacturer:SUS-TAC
Bullet Weight:161 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:1:8.0
Load data in caliber .280 Ackley Improved with .284 | 161gr | SUS-TAC LRT bullet and 110 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% | 56,246 psi | 87% | 2648 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,216 psi | 85% | 2671 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,821 psi | 78% | 2700 fps | 99.3% |
| Accurate 4064 | <<locked>> | 86% | 56,521 psi | 87% | 2700 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,869 psi | 87% | 2802 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 55,666 psi | 86% | 2726 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,681 psi | 87% | 2730 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 58,015 psi | 89% | 2844 fps | 98.6% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 51,953 psi | 80% | 2779 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,856 psi | 89% | 2720 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,941 psi | 86% | 2854 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 57,203 psi | 88% | 2749 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,624 psi | 89% | 2772 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 57,479 psi | 88% | 2851 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,056 psi | 85% | 2828 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,058 psi | 88% | 2831 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,517 psi | 78% | 2776 fps | 97.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,805 psi | 74% | 2720 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,727 psi | 64% | 2641 fps | 98.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,476 psi | 84% | 2904 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,506 psi | 85% | 2746 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,441 psi | 71% | 2703 fps | 96.5% |
| Bofors RP3 | <<locked>> | 88% | 58,349 psi | 90% | 2769 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,517 psi | 78% | 2776 fps | 97.6% |
| Bofors RP7 | <<locked>> | 92% | 57,522 psi | 88% | 2753 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,841 psi | 89% | 2753 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 58,755 psi | 90% | 2789 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 56,971 psi | 88% | 2822 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 94% | 57,348 psi | 88% | 2789 fps | 98.7% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 54,549 psi | 84% | 2766 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 82% | 56,260 psi | 87% | 2736 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 57,957 psi | 89% | 2779 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,623 psi | 87% | 2776 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,579 psi | 86% | 2838 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,201 psi | 56% | 1673 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,130 psi | 86% | 2720 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,419 psi | 85% | 2690 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,564 psi | 85% | 2703 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,798 psi | 89% | 2733 fps | 99.4% |
| IMR 4350 | <<locked>> | 96% | 58,262 psi | 90% | 2782 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,956 psi | 86% | 2733 fps | 99.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 57,972 psi | 89% | 2802 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,579 psi | 86% | 2753 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 57,450 psi | 88% | 2776 fps | 96.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,229 psi | 82% | 2815 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 82% | 57,856 psi | 89% | 2720 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,970 psi | 86% | 2700 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,827 psi | 89% | 2697 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,304 psi | 87% | 2707 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,840 psi | 86% | 2730 fps | 99.8% |
| Lovex S070 | <<locked>> | 94% | 56,840 psi | 87% | 2766 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,119 psi | 65% | 2556 fps | 98% |
| Norma 201 | <<locked>> | 84% | 57,885 psi | 89% | 2717 fps | 100% |
| Norma 202 | <<locked>> | 84% | 58,407 psi | 90% | 2710 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,869 psi | 87% | 2759 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,419 psi | 85% | 2782 fps | 98.1% |
| Norma MRPᴾ | <<locked>> | 100% | 53,461 psi | 82% | 2858 fps | 99.2% |
| Norma URP | <<locked>> | 94% | 55,434 psi | 85% | 2785 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 57,899 psi | 89% | 2789 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,203 psi | 88% | 2884 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 96% | 57,972 psi | 89% | 2841 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,458 psi | 76% | 2740 fps | 97.9% |
| Ramshot TAC | <<locked>> | 82% | 57,928 psi | 89% | 2753 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,885 psi | 89% | 2762 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,927 psi | 57% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 58,610 psi | 90% | 2772 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 58,726 psi | 90% | 2841 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 58,581 psi | 90% | 2871 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,579 psi | 87% | 2825 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,434 psi | 85% | 2858 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 40,596 psi | 62% | 2654 fps | 96.4% |
| Rottweil R 901 | <<locked>> | 82% | 58,697 psi | 90% | 2690 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 58,465 psi | 90% | 2717 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 58,204 psi | 90% | 2762 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,173 psi | 86% | 2762 fps | 97.3% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,333 psi | 87% | 2822 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 92% | 57,522 psi | 88% | 2753 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,840 psi | 86% | 2730 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,970 psi | 86% | 2700 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,304 psi | 87% | 2707 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 56,840 psi | 87% | 2766 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,376 psi | 87% | 2776 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,681 psi | 87% | 2733 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,435 psi | 88% | 2746 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 58,624 psi | 90% | 2644 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,159 psi | 86% | 2608 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,535 psi | 85% | 2684 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,825 psi | 86% | 2815 fps | 98.4% |
| Somchem S335 | <<locked>> | 84% | 58,378 psi | 90% | 2644 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,478 psi | 87% | 2720 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 58,276 psi | 90% | 2759 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 58,175 psi | 89% | 2759 fps | 96.8% |
| Somchem S365 | <<locked>> | 98% | 58,407 psi | 90% | 2838 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 56,898 psi | 88% | 2792 fps | 99.1% |
| Unknown powder | <<locked>> | 92% | 56,376 psi | 87% | 2792 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 55,869 psi | 86% | 2589 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 58,740 psi | 90% | 2674 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,564 psi | 85% | 2648 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,956 psi | 86% | 2687 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,827 psi | 89% | 2782 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,139 psi | 76% | 2664 fps | 97.6% |
| Vihtavuori N530 | <<locked>> | 82% | 58,378 psi | 90% | 2720 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 57,261 psi | 88% | 2690 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 56,985 psi | 88% | 2789 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,403 psi | 82% | 2792 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 53,954 psi | 83% | 2844 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 57,508 psi | 88% | 2749 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,971 psi | 88% | 2822 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,917 psi | 66% | 2766 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,492 psi | 85% | 2766 fps | 98.1% |
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% | 49,443 psi | 76% | 2556 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 42,612 psi | 66% | 2464 fps | 96.3% |
| Accurate 3100 | <<locked>> | 88% | 33,736 psi | 52% | 2382 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 46,847 psi | 72% | 2562 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,186 psi | 54% | 2428 fps | 97.7% |
| ADI AR 2206H | <<locked>> | 80% | 52,054 psi | 80% | 2674 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,295 psi | 68% | 2536 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 41,945 psi | 65% | 2569 fps | 95% |
| ADI AR 2213 | <<locked>> | 98% | 48,747 psi | 75% | 2723 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 54,114 psi | 83% | 2667 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,588 psi | 75% | 2740 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,657 psi | 69% | 2559 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,630 psi | 73% | 2621 fps | 99.9% |
| Alliant Reloder-16 | 43.8 gr | 80% | 34,766 psi | 53% | 2441 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,015 psi | 60% | 2556 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 41,568 psi | 64% | 2566 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 94% | 41,495 psi | 64% | 2608 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,440 psi | 39% | 2208 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 92% | 32,474 psi | 50% | 2421 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 84% | 30,690 psi | 47% | 2418 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,938 psi | 80% | 2694 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 43,613 psi | 67% | 2651 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 44,744 psi | 69% | 2569 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 41,495 psi | 64% | 2608 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 39,639 psi | 61% | 2444 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 54,099 psi | 83% | 2703 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 45,208 psi | 70% | 2579 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 40,437 psi | 62% | 2539 fps | 96.6% |
| Hodgdon H4350 | <<locked>> | 84% | 42,148 psi | 65% | 2530 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 51,140 psi | 79% | 2713 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 52,605 psi | 81% | 2684 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,271 psi | 50% | 2343 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,412 psi | 71% | 2621 fps | 100% |
| Hodgdon Superformance | 51.1 gr | 82% | 38,957 psi | 60% | 2539 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,992 psi | 42% | 1493 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,862 psi | 72% | 2579 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 48,936 psi | 75% | 2602 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,729 psi | 67% | 2516 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,830 psi | 66% | 2484 fps | 97.1% |
| IMR 4350 | <<locked>> | 82% | 37,695 psi | 58% | 2428 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,075 psi | 63% | 2477 fps | 96.6% |
| IMR 4831 | <<locked>> | 80% | 30,850 psi | 47% | 2310 fps | 96.3% |
| IMR 4895 | <<locked>> | 80% | 48,834 psi | 75% | 2651 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 50,575 psi | 78% | 2667 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 98% | 49,908 psi | 77% | 2756 fps | 95.9% |
| IMR 8208 XBR | <<locked>> | 80% | 54,114 psi | 83% | 2667 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 52,272 psi | 80% | 2651 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,227 psi | 79% | 2605 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,775 psi | 72% | 2566 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,696 psi | 60% | 2431 fps | 97.4% |
| Lovex S070 | <<locked>> | 80% | 36,956 psi | 57% | 2411 fps | 95.7% |
| Lovex S071 | <<locked>> | 92% | 32,706 psi | 50% | 2359 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 51,155 psi | 79% | 2625 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,605 psi | 79% | 2621 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,978 psi | 72% | 2608 fps | 100% |
| Norma 204 | <<locked>> | 86% | 42,453 psi | 65% | 2562 fps | 95.1% |
| Norma MRP | <<locked>> | 90% | 38,130 psi | 59% | 2569 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 35,360 psi | 54% | 2428 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 80% | 47,268 psi | 73% | 2635 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 45,614 psi | 70% | 2690 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 34,171 psi | 53% | 2408 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 94% | 39,479 psi | 61% | 2549 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 54,317 psi | 84% | 2700 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 54,215 psi | 83% | 2710 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,485 psi | 42% | 1529 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,484 psi | 70% | 2566 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,343 psi | 79% | 2736 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,452 psi | 64% | 2612 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,969 psi | 54% | 2444 fps | 97.4% |
| ReloadSwiss RS 70 | 47.9 gr | 80% | 34,272 psi | 53% | 2448 fps | 96.6% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 37,898 psi | 58% | 2585 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 55,230 psi | 85% | 2644 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 48,588 psi | 75% | 2575 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,308 psi | 65% | 2520 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 46,499 psi | 72% | 2605 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 90% | 40,466 psi | 62% | 2546 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 39,639 psi | 61% | 2444 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,696 psi | 60% | 2431 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,272 psi | 80% | 2651 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,775 psi | 72% | 2566 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,956 psi | 57% | 2411 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,192 psi | 66% | 2569 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,953 psi | 81% | 2677 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,604 psi | 78% | 2648 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,938 psi | 80% | 2559 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,787 psi | 67% | 2434 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,695 psi | 58% | 2375 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 42,757 psi | 66% | 2595 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 51,779 psi | 80% | 2559 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,866 psi | 81% | 2667 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,743 psi | 66% | 2520 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 50,952 psi | 78% | 2651 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 31,749 psi | 49% | 2385 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 38,551 psi | 59% | 2480 fps | 95.3% |
| Unknown powder | <<locked>> | 80% | 37,956 psi | 58% | 2477 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 80% | 52,446 psi | 81% | 2543 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,762 psi | 75% | 2543 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,124 psi | 76% | 2559 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,799 psi | 63% | 2454 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,550 psi | 56% | 2421 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 40,350 psi | 62% | 2507 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 54,520 psi | 84% | 2667 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 47,210 psi | 73% | 2552 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,071 psi | 55% | 2425 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 27,673 psi | 43% | 2277 fps | 95.5% |
| Vihtavuori N560 | <<locked>> | 98% | 50,618 psi | 78% | 2789 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,969 psi | 55% | 2402 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 40,437 psi | 62% | 2539 fps | 96.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,353 psi | 39% | 2280 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 90% | 41,582 psi | 64% | 2536 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 118 powders for .280 Ackley Improved loaded with the .284 | 161gr | SUS-TAC LRT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,904 fps; across all powders the maximum-charge window runs from 1,673 fps to 2,904 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 161.0 gr projectile in 0.284" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, 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 | 161gr | SUS-TAC LRT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2225, Baschieri & Pellagri 109 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.