Load Specifications
Bullet Manufacturer:Fox Bullets
Bullet Weight:123 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:1:8.5
Load data in caliber .260 Ackley Improved with .264 | 123gr | Fox Classic Hunter 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% | 55,825 psi | 90% | 2743 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,186 psi | 87% | 2769 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,983 psi | 87% | 2766 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 56,318 psi | 90% | 2835 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 53,867 psi | 86% | 2762 fps | 96.6% |
| Accurate 4064 | <<locked>> | 92% | 53,766 psi | 86% | 2808 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,693 psi | 86% | 2890 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 88% | 54,955 psi | 88% | 2844 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 56,362 psi | 90% | 2848 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,404 psi | 87% | 2802 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,679 psi | 88% | 2772 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 56,014 psi | 90% | 2904 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,839 psi | 88% | 2966 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,912 psi | 90% | 2864 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,680 psi | 89% | 2749 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 53,040 psi | 85% | 2835 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,156 psi | 84% | 2897 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,040 psi | 85% | 2933 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,579 psi | 59% | 2618 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,886 psi | 66% | 2772 fps | 96.9% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,114 psi | 88% | 2864 fps | 99.6% |
| Bofors RP3 | <<locked>> | 94% | 56,362 psi | 90% | 2881 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 53,388 psi | 86% | 2799 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,173 psi | 90% | 2785 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 53,229 psi | 85% | 2825 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,419 psi | 89% | 2927 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 55,027 psi | 88% | 2795 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 56,072 psi | 90% | 2822 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,128 psi | 87% | 2844 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 98% | 53,200 psi | 85% | 2884 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 96% | 54,375 psi | 87% | 2851 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 88% | 55,492 psi | 89% | 2854 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,211 psi | 77% | 2772 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,071 psi | 88% | 2890 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 54,346 psi | 87% | 2923 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,157 psi | 56% | 1719 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 53,548 psi | 86% | 2808 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 55,347 psi | 89% | 2838 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,622 psi | 89% | 2828 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,883 psi | 90% | 2808 fps | 97.7% |
| IMR 4198 | <<locked>> | 82% | 55,869 psi | 90% | 2707 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 53,606 psi | 86% | 2822 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,230 psi | 89% | 2828 fps | 97.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,821 psi | 81% | 2825 fps | 99.2% |
| IMR 4895 | <<locked>> | 90% | 54,389 psi | 87% | 2867 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 54,404 psi | 87% | 2802 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 53,983 psi | 87% | 2779 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,491 psi | 87% | 2818 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,926 psi | 88% | 2776 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 55,201 psi | 89% | 2822 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,389 psi | 87% | 2822 fps | 98.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 55,071 psi | 88% | 2851 fps | 97.9% |
| Norma 201 | <<locked>> | 88% | 53,664 psi | 86% | 2792 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,288 psi | 87% | 2792 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,767 psi | 89% | 2877 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 52,910 psi | 85% | 2877 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 92% | 56,405 psi | 90% | 2904 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,822 psi | 83% | 2871 fps | 98% |
| Ramshot TAC | <<locked>> | 86% | 54,520 psi | 87% | 2818 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,867 psi | 86% | 2831 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,317 psi | 89% | 2802 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,592 psi | 57% | 1759 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,664 psi | 86% | 2779 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,433 psi | 87% | 2825 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 53,388 psi | 86% | 2900 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 52,953 psi | 85% | 2936 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,490 psi | 86% | 2913 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,795 psi | 86% | 2943 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 86% | 54,636 psi | 88% | 2776 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,128 psi | 87% | 2789 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 56,217 psi | 90% | 2871 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 53,388 psi | 86% | 2799 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,389 psi | 87% | 2822 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,491 psi | 87% | 2818 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,201 psi | 89% | 2822 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 55,071 psi | 88% | 2851 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,592 psi | 88% | 2884 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 56,289 psi | 90% | 2844 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 53,563 psi | 86% | 2818 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,390 psi | 89% | 2733 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,564 psi | 89% | 2730 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,824 psi | 88% | 2776 fps | 97.5% |
| Somchem S321 | <<locked>> | 84% | 55,448 psi | 89% | 2835 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,752 psi | 88% | 2730 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,246 psi | 90% | 2841 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 56,420 psi | 90% | 2864 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,500 psi | 76% | 2828 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 55,390 psi | 89% | 2700 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,637 psi | 89% | 2717 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,925 psi | 86% | 2756 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,926 psi | 88% | 2776 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,708 psi | 88% | 2802 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,753 psi | 89% | 2877 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 54,853 psi | 88% | 2802 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 53,098 psi | 85% | 2769 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,824 psi | 88% | 2884 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,610 psi | 64% | 2694 fps | 97.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,333 psi | 90% | 2858 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 54,404 psi | 87% | 2844 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 53,621 psi | 86% | 2890 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,590 psi | 52% | 2595 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 53,214 psi | 85% | 2825 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% | 46,267 psi | 74% | 2608 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,720 psi | 81% | 2720 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,566 psi | 62% | 2526 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,614 psi | 73% | 2677 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 47,253 psi | 76% | 2654 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 36,521 psi | 59% | 2516 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 34,940 psi | 56% | 2543 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 42,569 psi | 68% | 2631 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 36,289 psi | 58% | 2487 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,701 psi | 72% | 2644 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 44,846 psi | 72% | 2635 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,301 psi | 84% | 2848 fps | 100% |
| Alliant Power Pro 2000-MR | 37.4 gr | 80% | 38,609 psi | 62% | 2654 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,491 psi | 57% | 2500 fps | 98% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,054 psi | 83% | 2700 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,290 psi | 61% | 2566 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,578 psi | 57% | 2562 fps | 95.8% |
| Alliant Reloder-17 | 36.8 gr | 80% | 30,560 psi | 49% | 2457 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,501 psi | 49% | 2457 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,869 psi | 61% | 2700 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,858 psi | 67% | 2638 fps | 97.7% |
| Bofors RP3 | <<locked>> | 80% | 34,998 psi | 56% | 2503 fps | 97.9% |
| Bofors RP7 | <<locked>> | 92% | 46,804 psi | 75% | 2687 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,644 psi | 75% | 2638 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,294 psi | 69% | 2664 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,037 psi | 77% | 2808 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 80% | 51,387 psi | 82% | 2743 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,112 psi | 84% | 2766 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,071 psi | 58% | 2507 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 92% | 43,453 psi | 70% | 2713 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 94% | 50,923 psi | 82% | 2795 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 42,931 psi | 69% | 2644 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,458 psi | 49% | 2402 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,001 psi | 63% | 2615 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 94% | 47,108 psi | 76% | 2799 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,976 psi | 42% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,350 psi | 66% | 2598 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 42,395 psi | 68% | 2641 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,058 psi | 61% | 2520 fps | 97.3% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,035 psi | 74% | 2644 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 52,620 psi | 84% | 2667 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 47,036 psi | 75% | 2713 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,876 psi | 74% | 2671 fps | 95.5% |
| IMR 4831 | <<locked>> | 88% | 34,098 psi | 55% | 2507 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 39,218 psi | 63% | 2595 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 80% | 44,701 psi | 72% | 2644 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 50,531 psi | 81% | 2730 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,452 psi | 66% | 2612 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 43,018 psi | 69% | 2579 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 37,884 psi | 61% | 2523 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 39,813 psi | 64% | 2562 fps | 95.5% |
| Lovex S070 | <<locked>> | 92% | 42,612 psi | 68% | 2638 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 41,742 psi | 67% | 2589 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 41,829 psi | 67% | 2595 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,666 psi | 60% | 2552 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 35,578 psi | 57% | 2549 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 37,231 psi | 60% | 2566 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 94% | 42,511 psi | 68% | 2703 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 44,759 psi | 72% | 2651 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,005 psi | 71% | 2667 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,428 psi | 78% | 2697 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,455 psi | 42% | 1575 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,227 psi | 81% | 2730 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 41,930 psi | 67% | 2605 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,277 psi | 65% | 2667 fps | 97.8% |
| ReloadSwiss RS 60 | 36.8 gr | 80% | 32,634 psi | 52% | 2530 fps | 98.8% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,041 psi | 56% | 2562 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 38,000 psi | 61% | 2635 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 45,484 psi | 73% | 2631 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,668 psi | 64% | 2543 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 32,779 psi | 53% | 2444 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 46,804 psi | 75% | 2687 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,813 psi | 64% | 2562 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,452 psi | 66% | 2612 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 37,884 psi | 61% | 2523 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 92% | 42,612 psi | 68% | 2638 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,156 psi | 55% | 2500 fps | 96.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,801 psi | 69% | 2621 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,292 psi | 66% | 2605 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,163 psi | 69% | 2546 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,737 psi | 57% | 2415 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 44,976 psi | 72% | 2618 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 48,356 psi | 78% | 2726 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 42,844 psi | 69% | 2549 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,627 psi | 68% | 2621 fps | 98.7% |
| Somchem S355 | <<locked>> | 80% | 33,997 psi | 55% | 2457 fps | 97.1% |
| Somchem S365 | <<locked>> | 84% | 27,833 psi | 45% | 2385 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 48,892 psi | 78% | 2608 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,511 psi | 70% | 2543 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,928 psi | 62% | 2526 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,624 psi | 64% | 2533 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,126 psi | 52% | 2392 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 86% | 35,041 psi | 56% | 2503 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 44,802 psi | 72% | 2641 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 38,247 psi | 61% | 2523 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 36,695 psi | 59% | 2556 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 94% | 32,619 psi | 52% | 2533 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,574 psi | 49% | 2369 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 44,440 psi | 71% | 2687 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 43,772 psi | 70% | 2720 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,545 psi | 49% | 2530 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,466 psi | 65% | 2605 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 102 powders for .260 Ackley Improved loaded with the .264 | 123gr | Fox Classic Hunter. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,966 fps; across all powders the maximum-charge window runs from 1,719 fps to 2,966 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 52–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.264" calls for a 1:8.5 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. ReloadSwiss RS 60, Alliant Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for .260 Ackley Improved with the .264 | 123gr | Fox Classic Hunter 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.