Load Specifications
Bullet Manufacturer:Barnes
Bullet Weight:120 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:1:9.0
Load data in caliber .260 Ackley Improved with .264 | 120gr | Barnes TTSX BT bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and Alliant Reloder-17.
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% | 55,259 psi | 89% | 2772 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,563 psi | 86% | 2799 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,258 psi | 85% | 2792 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,593 psi | 89% | 2861 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 53,577 psi | 86% | 2789 fps | 96.2% |
| Accurate 4064 | <<locked>> | 92% | 52,982 psi | 85% | 2835 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,707 psi | 85% | 2910 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 88% | 54,317 psi | 87% | 2871 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 94% | 55,666 psi | 89% | 2874 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,809 psi | 86% | 2831 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,041 psi | 87% | 2802 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,419 psi | 89% | 2933 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,041 psi | 87% | 2989 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,187 psi | 88% | 2890 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,810 psi | 88% | 2776 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 55,869 psi | 90% | 2913 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,387 psi | 82% | 2920 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 98% | 56,217 psi | 90% | 3015 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,260 psi | 58% | 2641 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,379 psi | 65% | 2789 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,375 psi | 87% | 2890 fps | 99.5% |
| Bofors RP3 | <<locked>> | 94% | 55,521 psi | 89% | 2904 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 56,289 psi | 90% | 2874 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,651 psi | 89% | 2812 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 52,518 psi | 84% | 2851 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 54,636 psi | 88% | 2953 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 54,070 psi | 87% | 2818 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,434 psi | 89% | 2848 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 53,359 psi | 86% | 2867 fps | 98.9% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 56,333 psi | 90% | 2966 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 96% | 53,606 psi | 86% | 2874 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 88% | 54,868 psi | 88% | 2881 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,427 psi | 76% | 2795 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,259 psi | 87% | 2917 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 53,751 psi | 86% | 2949 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,027 psi | 56% | 1742 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 52,939 psi | 85% | 2835 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 54,679 psi | 88% | 2867 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,955 psi | 88% | 2854 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,259 psi | 89% | 2835 fps | 97.4% |
| IMR 4198 | <<locked>> | 82% | 55,114 psi | 88% | 2736 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,779 psi | 85% | 2844 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,911 psi | 88% | 2858 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,314 psi | 81% | 2854 fps | 99% |
| IMR 4895 | <<locked>> | 90% | 53,737 psi | 86% | 2894 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 53,809 psi | 86% | 2831 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 53,374 psi | 86% | 2808 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 53,780 psi | 86% | 2844 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,404 psi | 87% | 2805 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 54,563 psi | 87% | 2851 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 53,650 psi | 86% | 2844 fps | 98.4% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,650 psi | 88% | 2881 fps | 97.6% |
| Norma 201 | <<locked>> | 88% | 53,069 psi | 85% | 2818 fps | 100% |
| Norma 202 | <<locked>> | 88% | 53,664 psi | 86% | 2822 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,027 psi | 88% | 2900 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 52,417 psi | 84% | 2904 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 92% | 55,985 psi | 90% | 2933 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,300 psi | 82% | 2897 fps | 97.7% |
| Ramshot TAC | <<locked>> | 86% | 53,853 psi | 86% | 2841 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,577 psi | 86% | 2864 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,737 psi | 88% | 2828 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,447 psi | 57% | 1781 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,127 psi | 85% | 2808 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 53,708 psi | 86% | 2848 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 56,362 psi | 90% | 2982 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 56,144 psi | 90% | 3022 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,837 psi | 85% | 2936 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,852 psi | 85% | 2963 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 86% | 54,085 psi | 87% | 2802 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,519 psi | 86% | 2815 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,376 psi | 89% | 2894 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 56,289 psi | 90% | 2874 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 53,650 psi | 86% | 2844 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 88% | 53,780 psi | 86% | 2844 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,563 psi | 87% | 2851 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,650 psi | 88% | 2881 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,143 psi | 87% | 2910 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 55,985 psi | 90% | 2802 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,941 psi | 90% | 2874 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 56,420 psi | 90% | 2897 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,882 psi | 88% | 2759 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,911 psi | 88% | 2759 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,418 psi | 87% | 2802 fps | 97.2% |
| Somchem S321 | <<locked>> | 84% | 54,795 psi | 88% | 2861 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,186 psi | 87% | 2759 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,492 psi | 89% | 2864 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 56,057 psi | 90% | 2897 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,615 psi | 75% | 2851 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,549 psi | 87% | 2723 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,114 psi | 88% | 2746 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,287 psi | 85% | 2785 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,288 psi | 87% | 2802 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 53,911 psi | 86% | 2825 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,853 psi | 88% | 2900 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 86% | 54,230 psi | 87% | 2828 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 55,912 psi | 90% | 2844 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,882 psi | 86% | 2904 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,160 psi | 63% | 2717 fps | 97.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 55,811 psi | 89% | 2884 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 53,708 psi | 86% | 2871 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 52,678 psi | 84% | 2910 fps | 97.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,285 psi | 52% | 2612 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 56,434 psi | 90% | 2907 fps | 100% |
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% | 45,890 psi | 74% | 2638 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,111 psi | 80% | 2749 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,840 psi | 61% | 2546 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,078 psi | 72% | 2700 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 49,821 psi | 80% | 2730 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 35,795 psi | 57% | 2536 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 34,360 psi | 55% | 2562 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 42,163 psi | 68% | 2657 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 35,969 psi | 58% | 2510 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,295 psi | 71% | 2671 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 43,990 psi | 71% | 2661 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,793 psi | 83% | 2877 fps | 99.9% |
| Alliant Power Pro 2000-MR | 37.7 gr | 80% | 38,159 psi | 61% | 2677 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,114 psi | 56% | 2523 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,619 psi | 83% | 2733 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,913 psi | 61% | 2589 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,157 psi | 56% | 2582 fps | 95.3% |
| Alliant Reloder-17 | 37.1 gr | 80% | 30,211 psi | 48% | 2474 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,082 psi | 51% | 2530 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,463 psi | 60% | 2720 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,350 psi | 66% | 2661 fps | 97.4% |
| Bofors RP3 | <<locked>> | 80% | 34,548 psi | 55% | 2523 fps | 97.6% |
| Bofors RP7 | <<locked>> | 94% | 49,371 psi | 79% | 2762 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,267 psi | 74% | 2667 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,772 psi | 69% | 2687 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,398 psi | 76% | 2831 fps | 99% |
| Hodgdon H322 | <<locked>> | 80% | 50,923 psi | 82% | 2772 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,547 psi | 83% | 2792 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 38,174 psi | 61% | 2585 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 94% | 46,064 psi | 74% | 2795 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 94% | 50,198 psi | 80% | 2815 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 42,525 psi | 68% | 2671 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,095 psi | 48% | 2421 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,522 psi | 62% | 2638 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 96% | 49,879 psi | 80% | 2881 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,933 psi | 42% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,973 psi | 66% | 2625 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 41,959 psi | 67% | 2667 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,695 psi | 60% | 2543 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,585 psi | 73% | 2671 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 51,880 psi | 83% | 2694 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 49,472 psi | 79% | 2789 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,339 psi | 73% | 2694 fps | 95.1% |
| IMR 4831 | <<locked>> | 90% | 35,998 psi | 58% | 2579 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 38,812 psi | 62% | 2618 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 80% | 44,295 psi | 71% | 2671 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 49,937 psi | 80% | 2756 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,959 psi | 66% | 2638 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 42,380 psi | 68% | 2598 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 37,202 psi | 60% | 2543 fps | 98.5% |
| Lovex S065 | <<locked>> | 88% | 39,334 psi | 63% | 2585 fps | 95.1% |
| Lovex S070 | <<locked>> | 94% | 44,904 psi | 72% | 2713 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 41,031 psi | 66% | 2608 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 41,408 psi | 66% | 2621 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,260 psi | 60% | 2575 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 35,085 psi | 56% | 2569 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 36,767 psi | 59% | 2585 fps | 97% |
| Ramshot Hunter | <<locked>> | 94% | 42,192 psi | 68% | 2726 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 44,309 psi | 71% | 2674 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,497 psi | 70% | 2690 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,935 psi | 77% | 2720 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,382 psi | 42% | 1594 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,763 psi | 80% | 2756 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 44,237 psi | 71% | 2680 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,755 psi | 64% | 2690 fps | 97.5% |
| ReloadSwiss RS 60 | 37.1 gr | 80% | 32,242 psi | 52% | 2546 fps | 98.5% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 36,912 psi | 59% | 2638 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,277 psi | 65% | 2717 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 44,802 psi | 72% | 2654 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,001 psi | 63% | 2559 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 32,387 psi | 52% | 2464 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 94% | 49,371 psi | 79% | 2762 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,334 psi | 63% | 2585 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,959 psi | 66% | 2638 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 37,202 psi | 60% | 2543 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 94% | 44,904 psi | 72% | 2713 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,750 psi | 54% | 2520 fps | 96.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,736 psi | 85% | 2756 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,293 psi | 68% | 2644 fps | 96.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,857 psi | 66% | 2628 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,859 psi | 69% | 2575 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,433 psi | 57% | 2438 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 44,382 psi | 71% | 2638 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 47,805 psi | 77% | 2749 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,148 psi | 68% | 2572 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,105 psi | 68% | 2644 fps | 98.4% |
| Somchem S355 | <<locked>> | 80% | 33,388 psi | 54% | 2474 fps | 96.7% |
| Somchem S365 | <<locked>> | 84% | 27,456 psi | 44% | 2405 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 48,515 psi | 78% | 2638 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,178 psi | 69% | 2572 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,566 psi | 62% | 2552 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,233 psi | 63% | 2559 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,734 psi | 51% | 2415 fps | 97.6% |
| Vihtavuori N160 | <<locked>> | 88% | 36,724 psi | 59% | 2572 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 44,338 psi | 71% | 2667 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 37,826 psi | 61% | 2546 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 36,187 psi | 58% | 2575 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 96% | 34,084 psi | 55% | 2598 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,182 psi | 48% | 2385 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 43,918 psi | 70% | 2713 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 46,064 psi | 74% | 2795 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,240 psi | 48% | 2546 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,987 psi | 64% | 2628 fps | 98.5% |
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 .260 Ackley Improved loaded with the .264 | 120gr | Barnes TTSX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,022 fps; across all powders the maximum-charge window runs from 1,742 fps to 3,022 fps. Accurate 4350 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 (430 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.264" calls for a 1:9.0 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .260 Ackley Improved with the .264 | 120gr | Barnes TTSX BT 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.