Load Specifications
Bullet:.264 | 140gr | Hornady ECX
Bullet Manufacturer:Hornady
Bullet Weight:140 gr
Bullet Diameter:0.264"
Bullet Length:<<locked>>
Caliber:6.5 x 64 Brenneke load data
Case Length (l3):2.54"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:67 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:23.62"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:8.5
Load data in caliber 6.5 x 64 Brenneke with .264 | 140gr | Hornady ECX bullet and 88 powders. The key underlying parameters are shown in the table above.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 54,578 psi | 88% | 2694 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 52,823 psi | 85% | 2740 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 53,911 psi | 86% | 2671 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,071 psi | 88% | 2785 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 54,476 psi | 87% | 2884 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 98% | 55,332 psi | 89% | 2884 fps | 97% |
| ADI AR 2208 | <<locked>> | 84% | 54,259 psi | 87% | 2710 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,231 psi | 90% | 2838 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 98% | 53,809 psi | 86% | 2831 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,724 psi | 59% | 2549 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,781 psi | 88% | 2723 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,027 psi | 88% | 2746 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,840 psi | 90% | 2838 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,577 psi | 86% | 2805 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,288 psi | 89% | 2818 fps | 98.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,434 psi | 90% | 2881 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,476 psi | 86% | 2805 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,340 psi | 74% | 2746 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,722 psi | 86% | 2894 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,822 psi | 83% | 2805 fps | 98.4% |
| Bofors RP3 | <<locked>> | 84% | 55,825 psi | 90% | 2743 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,434 psi | 90% | 2881 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 54,940 psi | 88% | 2733 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,919 psi | 74% | 2687 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 84% | 55,927 psi | 90% | 2762 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 53,519 psi | 86% | 2782 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 86% | 53,171 psi | 85% | 2743 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 96% | 53,693 psi | 86% | 2772 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 96% | 52,707 psi | 85% | 2756 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,420 psi | 90% | 2766 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,455 psi | 73% | 2785 fps | 98% |
| Hodgdon Superformance | <<locked>> | 88% | 53,751 psi | 86% | 2822 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,564 psi | 59% | 1706 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,417 psi | 86% | 2687 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,854 psi | 90% | 2723 fps | 99.7% |
| IMR 4350 | <<locked>> | 92% | 56,434 psi | 90% | 2776 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,403 psi | 86% | 2710 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 55,419 psi | 89% | 2776 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,506 psi | 89% | 2766 fps | 97.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,839 psi | 88% | 2861 fps | 97.9% |
| Lovex S062 | <<locked>> | 82% | 53,577 psi | 86% | 2677 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,476 psi | 86% | 2707 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 54,650 psi | 88% | 2746 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,978 psi | 75% | 2648 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 54,331 psi | 87% | 2733 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,388 psi | 86% | 2766 fps | 98.4% |
| Norma MRP | <<locked>> | 96% | 52,591 psi | 84% | 2851 fps | 99.5% |
| Norma URP | <<locked>> | 90% | 53,650 psi | 86% | 2766 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,434 psi | 89% | 2762 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,390 psi | 89% | 2881 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 92% | 56,144 psi | 90% | 2825 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,342 psi | 79% | 2753 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,130 psi | 60% | 1742 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,072 psi | 90% | 2749 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,069 psi | 85% | 2799 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,810 psi | 88% | 2805 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,490 psi | 86% | 2838 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,281 psi | 73% | 2779 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 82% | 55,666 psi | 89% | 2694 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,680 psi | 89% | 2736 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,186 psi | 87% | 2753 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 96% | 54,839 psi | 88% | 2812 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 88% | 54,940 psi | 88% | 2733 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,476 psi | 86% | 2707 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 53,577 psi | 86% | 2677 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,650 psi | 88% | 2746 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 53,896 psi | 86% | 2749 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,476 psi | 86% | 2582 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 52,939 psi | 85% | 2664 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,375 psi | 87% | 2805 fps | 98.8% |
| Somchem S355 | <<locked>> | 86% | 55,608 psi | 89% | 2733 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,608 psi | 89% | 2743 fps | 97.2% |
| Somchem S365 | <<locked>> | 92% | 53,476 psi | 86% | 2772 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,201 psi | 89% | 2782 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 82% | 55,927 psi | 90% | 2644 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,159 psi | 90% | 2664 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 53,417 psi | 86% | 2661 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,985 psi | 90% | 2766 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,723 psi | 88% | 2762 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 54,520 psi | 87% | 2664 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,882 psi | 88% | 2769 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 55,985 psi | 90% | 2831 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 52,808 psi | 85% | 2841 fps | 97.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,095 psi | 77% | 2749 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,477 psi | 89% | 2733 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,824 psi | 86% | 2785 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,240 psi | 79% | 2874 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,492 psi | 89% | 2782 fps | 98.8% |
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 80% | 51,082 psi | 82% | 2638 fps | 98.7% |
| Accurate 3100 | <<locked>> | 84% | 32,561 psi | 52% | 2359 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 50,343 psi | 81% | 2621 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,885 psi | 62% | 2510 fps | 99.1% |
| Accurate High Country | <<locked>> | 90% | 43,787 psi | 70% | 2694 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 94% | 47,747 psi | 77% | 2756 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 47,747 psi | 77% | 2608 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,292 psi | 65% | 2549 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 92% | 43,947 psi | 70% | 2651 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 98% | 34,374 psi | 55% | 2487 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,501 psi | 78% | 2631 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,808 psi | 83% | 2700 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,695 psi | 60% | 2516 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,033 psi | 69% | 2638 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,900 psi | 64% | 2543 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,306 psi | 65% | 2595 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,470 psi | 44% | 2280 fps | 97.3% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,212 psi | 50% | 2398 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 29,370 psi | 47% | 2385 fps | 95.7% |
| Bofors RP15 | <<locked>> | 92% | 39,755 psi | 64% | 2582 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 48,675 psi | 78% | 2638 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,306 psi | 65% | 2595 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 42,786 psi | 69% | 2523 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 98% | 42,830 psi | 69% | 2625 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 49,153 psi | 79% | 2657 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 40,988 psi | 66% | 2559 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 43,787 psi | 70% | 2575 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 92% | 47,007 psi | 75% | 2661 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 46,122 psi | 74% | 2644 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,389 psi | 57% | 2415 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,624 psi | 64% | 2654 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 39,885 psi | 64% | 2572 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 44% | 1522 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,241 psi | 81% | 2638 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,605 psi | 84% | 2674 fps | 99.4% |
| IMR 4350 | <<locked>> | 80% | 38,334 psi | 61% | 2454 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,121 psi | 71% | 2549 fps | 98% |
| IMR 4831 | <<locked>> | 80% | 37,304 psi | 60% | 2464 fps | 98.8% |
| IMR 4955 Enduron | <<locked>> | 90% | 45,818 psi | 73% | 2602 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 94% | 44,715 psi | 72% | 2680 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 50,430 psi | 81% | 2635 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,510 psi | 67% | 2503 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 39,842 psi | 64% | 2487 fps | 97.3% |
| Lovex S071 | <<locked>> | 88% | 31,734 psi | 51% | 2339 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 51,155 psi | 82% | 2684 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,509 psi | 65% | 2536 fps | 95.4% |
| Norma MRP | <<locked>> | 84% | 34,214 psi | 55% | 2484 fps | 95% |
| Norma URP | <<locked>> | 80% | 38,638 psi | 62% | 2503 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 51,532 psi | 83% | 2707 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,483 psi | 71% | 2690 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 37,376 psi | 60% | 2490 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 92% | 36,622 psi | 59% | 2503 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,818 psi | 45% | 1558 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,168 psi | 79% | 2644 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,745 psi | 73% | 2687 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,711 psi | 62% | 2530 fps | 98.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,391 psi | 60% | 2536 fps | 98.4% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,535 psi | 59% | 2575 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 52,069 psi | 83% | 2641 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,861 psi | 74% | 2589 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,483 psi | 71% | 2585 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 86% | 39,088 psi | 63% | 2526 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 42,786 psi | 69% | 2523 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,510 psi | 67% | 2503 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 50,430 psi | 81% | 2635 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,842 psi | 64% | 2487 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,094 psi | 76% | 2641 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,920 psi | 75% | 2490 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,582 psi | 65% | 2448 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,725 psi | 62% | 2523 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 46,021 psi | 74% | 2585 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 48,762 psi | 78% | 2635 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 35,041 psi | 56% | 2461 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 37,130 psi | 60% | 2457 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 52,518 psi | 84% | 2602 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,881 psi | 85% | 2618 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,063 psi | 71% | 2520 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,161 psi | 64% | 2503 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 36,535 psi | 59% | 2438 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 51,082 psi | 82% | 2615 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,465 psi | 63% | 2503 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 30,487 psi | 49% | 2352 fps | 97.3% |
| Vihtavuori N560 | <<locked>> | 92% | 45,730 psi | 73% | 2713 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 98% | 44,802 psi | 72% | 2687 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,146 psi | 63% | 2474 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 40,988 psi | 66% | 2559 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,134 psi | 39% | 2251 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,059 psi | 63% | 2497 fps | 95.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 94 powders for 6.5 x 64 Brenneke loaded with the .264 | 140gr | Hornady ECX. Alliant Reloder-26 delivers the highest muzzle velocity at 2,894 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,894 fps. ADI AR 2217 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-22 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. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 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.