Load Specifications
Bullet:.264 | 121gr | SUS-TAC LRT
Bullet Manufacturer:SUS-TAC
Bullet Weight:121 gr
Bullet Diameter:0.264"
Bullet Length:<<locked>>
Caliber:.260 Ackley Improved load data
Case Length (l3):2.03"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:56 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:8.0
Load data in caliber .260 Ackley Improved with .264 | 121gr | SUS-TAC LRT bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Alliant Power Pro 2000-MR.
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 2015 | <<locked>> | 86% | 56,115 psi | 90% | 2762 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,607 psi | 88% | 2789 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,781 psi | 88% | 2789 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 53,011 psi | 85% | 2802 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,085 psi | 87% | 2779 fps | 96.3% |
| Accurate 4064 | <<locked>> | 92% | 54,433 psi | 87% | 2831 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,027 psi | 87% | 2910 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 88% | 55,535 psi | 89% | 2867 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 56,434 psi | 90% | 2864 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,520 psi | 87% | 2818 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,216 psi | 89% | 2795 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 56,101 psi | 90% | 2920 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,868 psi | 88% | 2982 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,101 psi | 90% | 2884 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,854 psi | 90% | 2769 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 53,287 psi | 85% | 2854 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,286 psi | 84% | 2913 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,200 psi | 85% | 2949 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,999 psi | 59% | 2638 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,292 psi | 66% | 2792 fps | 96.7% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,216 psi | 89% | 2881 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 53,026 psi | 85% | 2848 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 53,664 psi | 86% | 2815 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,246 psi | 90% | 2799 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 53,476 psi | 86% | 2844 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,492 psi | 89% | 2943 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 55,042 psi | 88% | 2812 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 56,217 psi | 90% | 2838 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,404 psi | 87% | 2861 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 98% | 53,345 psi | 86% | 2900 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 96% | 54,462 psi | 87% | 2864 fps | 96% |
| Hodgdon H4895 | <<locked>> | 88% | 56,057 psi | 90% | 2877 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,428 psi | 78% | 2789 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,172 psi | 88% | 2907 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 54,563 psi | 87% | 2940 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,215 psi | 56% | 1729 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 53,606 psi | 86% | 2825 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 55,883 psi | 90% | 2861 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,738 psi | 89% | 2844 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,985 psi | 90% | 2825 fps | 97.5% |
| IMR 4198 | <<locked>> | 82% | 55,767 psi | 89% | 2723 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 53,722 psi | 86% | 2838 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,317 psi | 89% | 2844 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,097 psi | 82% | 2844 fps | 99.1% |
| IMR 4895 | <<locked>> | 90% | 54,636 psi | 88% | 2884 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 54,520 psi | 87% | 2818 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,389 psi | 87% | 2799 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,868 psi | 88% | 2838 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,027 psi | 88% | 2792 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 55,477 psi | 89% | 2841 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,708 psi | 88% | 2838 fps | 98.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 55,347 psi | 89% | 2871 fps | 97.7% |
| Norma 201 | <<locked>> | 88% | 54,027 psi | 87% | 2808 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,476 psi | 87% | 2812 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,985 psi | 90% | 2894 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 53,055 psi | 85% | 2894 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 90% | 52,968 psi | 85% | 2864 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,967 psi | 83% | 2887 fps | 97.8% |
| Ramshot TAC | <<locked>> | 86% | 54,679 psi | 88% | 2831 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,418 psi | 87% | 2854 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,506 psi | 89% | 2822 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,679 psi | 57% | 1772 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,780 psi | 86% | 2795 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,636 psi | 88% | 2841 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 53,519 psi | 86% | 2917 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 53,113 psi | 85% | 2953 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,693 psi | 86% | 2930 fps | 99.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,563 psi | 86% | 2953 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 86% | 55,172 psi | 88% | 2795 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,534 psi | 87% | 2808 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 52,895 psi | 85% | 2838 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 53,664 psi | 86% | 2815 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,708 psi | 88% | 2838 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,868 psi | 88% | 2838 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,477 psi | 89% | 2841 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 55,347 psi | 89% | 2871 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,665 psi | 88% | 2900 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 53,011 psi | 85% | 2808 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 53,722 psi | 86% | 2835 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,941 psi | 90% | 2756 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,608 psi | 89% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,114 psi | 88% | 2789 fps | 97.3% |
| Somchem S321 | <<locked>> | 84% | 55,695 psi | 89% | 2851 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,984 psi | 88% | 2749 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,362 psi | 90% | 2858 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 53,490 psi | 86% | 2838 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,747 psi | 77% | 2848 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 55,521 psi | 89% | 2713 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,130 psi | 90% | 2740 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 54,143 psi | 87% | 2776 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,114 psi | 88% | 2792 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,911 psi | 88% | 2818 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,898 psi | 90% | 2894 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 86% | 54,969 psi | 88% | 2818 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 53,330 psi | 86% | 2789 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,665 psi | 88% | 2897 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,074 psi | 64% | 2717 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 52,939 psi | 85% | 2825 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 54,491 psi | 87% | 2861 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 53,722 psi | 86% | 2907 fps | 97.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,141 psi | 53% | 2618 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 88% | 53,359 psi | 86% | 2841 fps | 99.9% |
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 2015 | <<locked>> | 80% | 46,644 psi | 75% | 2628 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,155 psi | 82% | 2740 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,450 psi | 63% | 2552 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,383 psi | 74% | 2700 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,720 psi | 81% | 2723 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 37,318 psi | 60% | 2543 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 35,752 psi | 57% | 2572 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 43,192 psi | 69% | 2657 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 36,550 psi | 59% | 2500 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,237 psi | 73% | 2667 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 45,049 psi | 72% | 2654 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,823 psi | 85% | 2871 fps | 99.9% |
| Alliant Power Pro 2000-MR | 37.2 gr | 80% | 38,885 psi | 62% | 2674 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,158 psi | 58% | 2526 fps | 97.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,634 psi | 84% | 2723 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,943 psi | 62% | 2592 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,897 psi | 58% | 2579 fps | 95.6% |
| Alliant Reloder-17 | 36.7 gr | 80% | 31,212 psi | 50% | 2484 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,995 psi | 50% | 2477 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,334 psi | 61% | 2720 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,105 psi | 68% | 2654 fps | 97.5% |
| Bofors RP3 | <<locked>> | 80% | 35,534 psi | 57% | 2523 fps | 97.9% |
| Bofors RP7 | <<locked>> | 92% | 47,456 psi | 76% | 2710 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,862 psi | 75% | 2654 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,656 psi | 70% | 2684 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,182 psi | 77% | 2825 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 80% | 51,474 psi | 83% | 2759 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,678 psi | 84% | 2789 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,506 psi | 59% | 2526 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 94% | 46,688 psi | 75% | 2785 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 94% | 51,068 psi | 82% | 2808 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 43,555 psi | 70% | 2667 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 31,111 psi | 50% | 2428 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,291 psi | 63% | 2635 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 94% | 47,050 psi | 75% | 2808 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,310 psi | 42% | 1545 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,568 psi | 67% | 2615 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 43,004 psi | 69% | 2664 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,348 psi | 61% | 2536 fps | 97.2% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,601 psi | 75% | 2667 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 52,533 psi | 84% | 2680 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 47,195 psi | 76% | 2730 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 46,369 psi | 74% | 2694 fps | 95.4% |
| IMR 4831 | <<locked>> | 88% | 34,534 psi | 55% | 2526 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 39,871 psi | 64% | 2621 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 80% | 45,237 psi | 73% | 2667 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 50,995 psi | 82% | 2749 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,945 psi | 67% | 2635 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 43,250 psi | 69% | 2595 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 38,305 psi | 61% | 2543 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 40,205 psi | 64% | 2582 fps | 95.3% |
| Lovex S070 | <<locked>> | 92% | 43,337 psi | 69% | 2664 fps | 95% |
| Norma 201 | <<locked>> | 80% | 42,206 psi | 68% | 2608 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 42,453 psi | 68% | 2618 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,305 psi | 61% | 2579 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 35,955 psi | 58% | 2569 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 37,550 psi | 60% | 2585 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 94% | 42,844 psi | 69% | 2720 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 45,049 psi | 72% | 2667 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,570 psi | 71% | 2690 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,631 psi | 78% | 2713 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,542 psi | 43% | 1581 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,415 psi | 81% | 2746 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 42,264 psi | 68% | 2621 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,538 psi | 65% | 2687 fps | 97.7% |
| ReloadSwiss RS 60 | 36.7 gr | 80% | 33,257 psi | 53% | 2552 fps | 98.8% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,462 psi | 57% | 2585 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 38,348 psi | 61% | 2648 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 46,093 psi | 74% | 2654 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,161 psi | 64% | 2562 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 33,620 psi | 54% | 2474 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 47,456 psi | 76% | 2710 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 40,205 psi | 64% | 2582 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,945 psi | 67% | 2635 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 38,305 psi | 61% | 2543 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 92% | 43,337 psi | 69% | 2664 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,519 psi | 55% | 2520 fps | 96.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,207 psi | 69% | 2638 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,582 psi | 67% | 2625 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,772 psi | 70% | 2569 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,274 psi | 58% | 2434 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 45,339 psi | 73% | 2635 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 48,660 psi | 78% | 2743 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 43,250 psi | 69% | 2569 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,859 psi | 69% | 2638 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 34,476 psi | 55% | 2480 fps | 97% |
| Somchem S365 | <<locked>> | 84% | 28,340 psi | 45% | 2408 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 49,458 psi | 79% | 2631 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,063 psi | 71% | 2566 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,639 psi | 64% | 2549 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,234 psi | 65% | 2556 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,793 psi | 53% | 2418 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 86% | 35,404 psi | 57% | 2520 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 45,005 psi | 72% | 2657 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 38,624 psi | 62% | 2543 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 37,115 psi | 60% | 2575 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 94% | 33,156 psi | 53% | 2556 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,198 psi | 50% | 2392 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 44,672 psi | 72% | 2703 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 44,048 psi | 71% | 2736 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,096 psi | 50% | 2552 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,089 psi | 66% | 2628 fps | 98.7% |
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 102 powders for .260 Ackley Improved loaded with the .264 | 121gr | SUS-TAC LRT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,982 fps; across all powders the maximum-charge window runs from 1,729 fps to 2,982 fps. Accurate 4350 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 121.0 gr projectile in 0.264" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 60, Alliant Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for .260 Ackley Improved with the .264 | 121gr | SUS-TAC LRT 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.