Load Specifications
Bullet:.264 | 120gr | Barnes TAC-X
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:1:9.5
Load data in caliber .260 Ackley Improved with .264 | 120gr | Barnes TAC-X bullet and 101 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 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.
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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% | 56,289 psi | 90% | 2795 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,476 psi | 87% | 2818 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,259 psi | 87% | 2812 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 52,852 psi | 85% | 2828 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,186 psi | 87% | 2812 fps | 96.5% |
| Accurate 4064 | <<locked>> | 92% | 54,317 psi | 87% | 2858 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,331 psi | 87% | 2940 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 88% | 55,550 psi | 89% | 2897 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 56,405 psi | 90% | 2894 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,665 psi | 88% | 2848 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,158 psi | 88% | 2822 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,158 psi | 88% | 3015 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,376 psi | 90% | 2913 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,927 psi | 90% | 2799 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 53,563 psi | 86% | 2887 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,388 psi | 84% | 2943 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,563 psi | 86% | 2986 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,028 psi | 59% | 2664 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,379 psi | 66% | 2822 fps | 97% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,405 psi | 89% | 2910 fps | 99.6% |
| Bofors RP3 | <<locked>> | 92% | 53,098 psi | 85% | 2877 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 53,737 psi | 86% | 2844 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 53,069 psi | 85% | 2782 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 53,722 psi | 86% | 2874 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,941 psi | 90% | 2976 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 55,085 psi | 88% | 2838 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 56,304 psi | 90% | 2867 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,491 psi | 87% | 2890 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 98% | 53,708 psi | 86% | 2933 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 96% | 54,969 psi | 88% | 2904 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 88% | 56,115 psi | 90% | 2907 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,472 psi | 78% | 2818 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,463 psi | 89% | 2940 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 54,926 psi | 88% | 2976 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,186 psi | 56% | 1752 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 53,766 psi | 86% | 2854 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 55,709 psi | 89% | 2887 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,159 psi | 90% | 2881 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,347 psi | 90% | 2861 fps | 97.7% |
| IMR 4198 | <<locked>> | 82% | 56,231 psi | 90% | 2759 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 53,737 psi | 86% | 2867 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,912 psi | 90% | 2881 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,358 psi | 82% | 2877 fps | 99.2% |
| IMR 4895 | <<locked>> | 90% | 54,940 psi | 88% | 2917 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 54,665 psi | 88% | 2848 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,592 psi | 88% | 2831 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,056 psi | 88% | 2871 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,230 psi | 89% | 2825 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 55,767 psi | 89% | 2874 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,694 psi | 88% | 2867 fps | 98.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 55,680 psi | 89% | 2904 fps | 97.9% |
| Norma 201 | <<locked>> | 88% | 53,969 psi | 87% | 2838 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,549 psi | 87% | 2841 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,231 psi | 90% | 2927 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 53,519 psi | 86% | 2927 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 90% | 53,098 psi | 85% | 2897 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,591 psi | 84% | 2923 fps | 98.1% |
| Ramshot TAC | <<locked>> | 86% | 54,897 psi | 88% | 2864 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,317 psi | 87% | 2884 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,434 psi | 89% | 2848 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,578 psi | 57% | 1795 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,041 psi | 87% | 2828 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,723 psi | 88% | 2871 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 53,940 psi | 86% | 2953 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 53,519 psi | 86% | 2989 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,853 psi | 86% | 2959 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,056 psi | 87% | 2992 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 86% | 54,694 psi | 88% | 2818 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,375 psi | 87% | 2835 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 52,968 psi | 85% | 2867 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 53,737 psi | 86% | 2844 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,694 psi | 88% | 2867 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,056 psi | 88% | 2871 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,767 psi | 89% | 2874 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 55,680 psi | 89% | 2904 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,230 psi | 89% | 2933 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 53,098 psi | 85% | 2841 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,056 psi | 87% | 2867 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,796 psi | 89% | 2779 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,115 psi | 90% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,448 psi | 89% | 2825 fps | 97.6% |
| Somchem S321 | <<locked>> | 84% | 55,985 psi | 90% | 2884 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,998 psi | 88% | 2779 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 52,707 psi | 85% | 2831 fps | 99.8% |
| Somchem S355 | <<locked>> | 94% | 53,693 psi | 86% | 2871 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,659 psi | 76% | 2874 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 55,550 psi | 89% | 2743 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,043 psi | 90% | 2766 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 54,273 psi | 87% | 2805 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,114 psi | 88% | 2818 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,027 psi | 88% | 2848 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 56,318 psi | 90% | 2930 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 55,085 psi | 88% | 2848 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 53,534 psi | 86% | 2818 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,259 psi | 89% | 2933 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,205 psi | 64% | 2743 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 53,026 psi | 85% | 2851 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 54,940 psi | 88% | 2894 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,143 psi | 87% | 2943 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,098 psi | 53% | 2648 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 53,635 psi | 86% | 2871 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% | 46,557 psi | 75% | 2654 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,082 psi | 82% | 2769 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,783 psi | 62% | 2569 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,992 psi | 74% | 2723 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 47,688 psi | 76% | 2703 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 36,709 psi | 59% | 2559 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 35,433 psi | 57% | 2592 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 43,004 psi | 69% | 2680 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 36,477 psi | 58% | 2526 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,150 psi | 72% | 2694 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 45,107 psi | 72% | 2680 fps | 100% |
| Alliant Power Pro 2000-MR | 38.4 gr | 80% | 38,870 psi | 62% | 2700 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,926 psi | 58% | 2549 fps | 98% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,373 psi | 84% | 2749 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,711 psi | 62% | 2612 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,824 psi | 57% | 2605 fps | 95.7% |
| Alliant Reloder-17 | 37.8 gr | 80% | 30,821 psi | 49% | 2500 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,792 psi | 49% | 2500 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,406 psi | 62% | 2753 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,134 psi | 68% | 2680 fps | 97.7% |
| Bofors RP3 | <<locked>> | 80% | 35,389 psi | 57% | 2549 fps | 98% |
| Bofors RP7 | <<locked>> | 92% | 47,224 psi | 76% | 2736 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,804 psi | 75% | 2684 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,598 psi | 70% | 2710 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,327 psi | 77% | 2854 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 80% | 51,547 psi | 83% | 2789 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,460 psi | 84% | 2812 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,405 psi | 58% | 2552 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 92% | 44,063 psi | 71% | 2766 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 94% | 51,213 psi | 82% | 2841 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 43,424 psi | 70% | 2694 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,734 psi | 49% | 2444 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,349 psi | 63% | 2661 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 94% | 47,442 psi | 76% | 2844 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,223 psi | 42% | 1568 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,829 psi | 67% | 2648 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 43,004 psi | 69% | 2694 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,232 psi | 61% | 2562 fps | 97.3% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,325 psi | 74% | 2690 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 52,649 psi | 84% | 2710 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 47,326 psi | 76% | 2759 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 46,340 psi | 74% | 2720 fps | 95.6% |
| IMR 4831 | <<locked>> | 88% | 34,287 psi | 55% | 2546 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 39,682 psi | 64% | 2644 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 80% | 45,150 psi | 72% | 2694 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 50,821 psi | 81% | 2776 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,872 psi | 67% | 2661 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 43,207 psi | 69% | 2621 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 38,058 psi | 61% | 2566 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 40,059 psi | 64% | 2605 fps | 95.5% |
| Lovex S070 | <<locked>> | 92% | 43,047 psi | 69% | 2684 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 41,916 psi | 67% | 2631 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 42,337 psi | 68% | 2644 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,087 psi | 61% | 2602 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 35,781 psi | 57% | 2592 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 37,507 psi | 60% | 2608 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 94% | 43,047 psi | 69% | 2753 fps | 95.9% |
| Ramshot TAC | <<locked>> | 80% | 44,991 psi | 72% | 2694 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,280 psi | 71% | 2713 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,675 psi | 78% | 2740 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,382 psi | 42% | 1601 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,676 psi | 81% | 2779 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 42,148 psi | 68% | 2648 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,379 psi | 65% | 2710 fps | 97.8% |
| ReloadSwiss RS 60 | 37.8 gr | 80% | 32,895 psi | 53% | 2572 fps | 98.8% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,389 psi | 57% | 2608 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 38,218 psi | 61% | 2677 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 45,788 psi | 73% | 2677 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,900 psi | 64% | 2585 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 33,185 psi | 53% | 2490 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 47,224 psi | 76% | 2736 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 40,059 psi | 64% | 2605 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,872 psi | 67% | 2661 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 38,058 psi | 61% | 2566 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 92% | 43,047 psi | 69% | 2684 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,229 psi | 55% | 2539 fps | 96.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,076 psi | 69% | 2667 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,350 psi | 66% | 2648 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,424 psi | 70% | 2592 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,969 psi | 58% | 2454 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 45,368 psi | 73% | 2664 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 48,602 psi | 78% | 2769 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,033 psi | 69% | 2592 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,873 psi | 69% | 2664 fps | 98.6% |
| Somchem S355 | <<locked>> | 80% | 34,185 psi | 55% | 2500 fps | 97.1% |
| Somchem S365 | <<locked>> | 84% | 28,065 psi | 45% | 2428 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 49,168 psi | 79% | 2654 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,772 psi | 70% | 2585 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,218 psi | 63% | 2569 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,074 psi | 64% | 2579 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,503 psi | 52% | 2438 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 86% | 35,273 psi | 57% | 2543 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 45,208 psi | 72% | 2690 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 38,609 psi | 62% | 2566 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 36,869 psi | 59% | 2595 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 94% | 32,982 psi | 53% | 2575 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,908 psi | 50% | 2411 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 44,802 psi | 72% | 2733 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 44,063 psi | 71% | 2766 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,835 psi | 49% | 2575 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,770 psi | 65% | 2648 fps | 98.8% |
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 101 powders for .260 Ackley Improved loaded with the .264 | 120gr | Barnes TAC-X. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,015 fps; across all powders the maximum-charge window runs from 1,752 fps to 3,015 fps. Accurate 4350 gives the best case fill at 100 %, and 101 of the 101 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 120.0 gr projectile in 0.264" calls for a 1:9.5 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 Reloder-17, ReloadSwiss RS 60, Alliant Power Pro 2000-MR rank at the top here: for .260 Ackley Improved with the .264 | 120gr | Barnes TAC-X 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.