Load Specifications
Load data in caliber 6.5 x 64 Brenneke with .264 | 128gr | MRR Green Long Range bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country and Norma MRP.
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 2495 | <<locked>> | 82% | 56,028 psi | 90% | 2769 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 53,490 psi | 86% | 2785 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,100 psi | 88% | 2887 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 56,260 psi | 90% | 2822 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,621 psi | 86% | 2881 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 56,246 psi | 90% | 3028 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 86% | 56,130 psi | 90% | 2854 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,302 psi | 87% | 2920 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,825 psi | 90% | 2976 fps | 97.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,521 psi | 89% | 2976 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,476 psi | 87% | 2917 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,751 psi | 86% | 2828 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,737 psi | 86% | 2848 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,085 psi | 87% | 2933 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,477 psi | 89% | 2959 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,766 psi | 86% | 2907 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,810 psi | 88% | 2969 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,677 psi | 83% | 2900 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,976 psi | 72% | 2825 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,622 psi | 89% | 3041 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,125 psi | 80% | 2887 fps | 97.3% |
| Bofors RP3 | <<locked>> | 84% | 54,447 psi | 87% | 2844 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,810 psi | 88% | 2969 fps | 98.3% |
| Bofors RP7 | <<locked>> | 88% | 53,838 psi | 86% | 2828 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 84% | 54,752 psi | 88% | 2861 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 55,506 psi | 89% | 2930 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 55,317 psi | 89% | 2890 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 98% | 55,840 psi | 90% | 2913 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,781 psi | 88% | 2900 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,650 psi | 88% | 2861 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,014 psi | 90% | 2897 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,048 psi | 71% | 2854 fps | 96.4% |
| Hodgdon Superformance | <<locked>> | 90% | 56,043 psi | 90% | 2969 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,593 psi | 59% | 1788 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,767 psi | 89% | 2841 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,868 psi | 88% | 2822 fps | 99.1% |
| IMR 4350 | <<locked>> | 92% | 54,911 psi | 88% | 2864 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,419 psi | 89% | 2858 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 53,882 psi | 86% | 2871 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,143 psi | 88% | 2877 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,809 psi | 86% | 2848 fps | 96.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,084 psi | 85% | 2940 fps | 96.6% |
| Lovex S062 | <<locked>> | 84% | 56,043 psi | 90% | 2835 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,593 psi | 89% | 2854 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 53,388 psi | 86% | 2841 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,658 psi | 73% | 2733 fps | 98.6% |
| Norma 203B | <<locked>> | 82% | 53,040 psi | 85% | 2835 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,666 psi | 89% | 2917 fps | 98% |
| Norma MRP | <<locked>> | 98% | 54,244 psi | 87% | 2992 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 55,753 psi | 89% | 2917 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,679 psi | 86% | 2858 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,621 psi | 86% | 2963 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 92% | 54,636 psi | 88% | 2920 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,834 psi | 77% | 2835 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,144 psi | 60% | 1827 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,520 psi | 87% | 2841 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,013 psi | 88% | 2953 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,301 psi | 85% | 2900 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,477 psi | 89% | 2986 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,947 psi | 70% | 2844 fps | 97.6% |
| Rottweil R 902 | <<locked>> | 82% | 54,389 psi | 87% | 2792 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,607 psi | 88% | 2841 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,188 psi | 90% | 2894 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 96% | 52,968 psi | 85% | 2894 fps | 98% |
| Rottweil R 907 | <<locked>> | 88% | 53,838 psi | 86% | 2828 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,593 psi | 89% | 2854 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 56,043 psi | 90% | 2835 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,388 psi | 86% | 2841 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,028 psi | 90% | 2900 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,579 psi | 89% | 2730 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,332 psi | 89% | 2808 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,202 psi | 90% | 2949 fps | 98.5% |
| Somchem S355 | <<locked>> | 86% | 54,592 psi | 88% | 2838 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,114 psi | 87% | 2828 fps | 96% |
| Somchem S365 | <<locked>> | 94% | 54,984 psi | 88% | 2917 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,766 psi | 86% | 2874 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 82% | 54,824 psi | 88% | 2753 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,911 psi | 88% | 2766 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,898 psi | 90% | 2815 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,418 psi | 87% | 2861 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,011 psi | 85% | 2848 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 82% | 53,243 psi | 85% | 2766 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,359 psi | 86% | 2861 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 54,331 psi | 87% | 2927 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,578 psi | 88% | 2982 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,882 psi | 86% | 2828 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,854 psi | 90% | 2933 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,644 psi | 75% | 2959 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,693 psi | 86% | 2864 fps | 97.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 52,417 psi | 84% | 2720 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,922 psi | 80% | 2726 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 34,214 psi | 55% | 2493 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 49,676 psi | 80% | 2726 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,840 psi | 61% | 2592 fps | 98.2% |
| Accurate High Country | 52 gr | 92% | 45,542 psi | 73% | 2835 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 46,818 psi | 75% | 2703 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 44,759 psi | 72% | 2746 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 96% | 48,776 psi | 78% | 2848 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,924 psi | 83% | 2920 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 42,105 psi | 68% | 2687 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,224 psi | 76% | 2726 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,343 psi | 81% | 2792 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,883 psi | 59% | 2602 fps | 98.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,989 psi | 67% | 2730 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,454 psi | 71% | 2740 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,887 psi | 67% | 2730 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,108 psi | 43% | 2356 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,721 psi | 52% | 2533 fps | 95.2% |
| Alliant Reloder-26 | 47.8 gr | 82% | 31,096 psi | 50% | 2526 fps | 95.3% |
| Bofors RP15 | <<locked>> | 96% | 43,888 psi | 70% | 2769 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 47,674 psi | 76% | 2740 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,887 psi | 67% | 2730 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 41,800 psi | 67% | 2608 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 80% | 48,051 psi | 77% | 2749 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 39,929 psi | 64% | 2641 fps | 96.3% |
| Hodgdon H4350 | <<locked>> | 80% | 42,743 psi | 69% | 2661 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 96% | 52,127 psi | 84% | 2854 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,198 psi | 82% | 2838 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,403 psi | 55% | 2497 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,475 psi | 84% | 2841 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,292 psi | 66% | 2789 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 38,899 psi | 62% | 2648 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 44% | 1594 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,255 psi | 79% | 2736 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,488 psi | 83% | 2769 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 40,074 psi | 64% | 2592 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,250 psi | 69% | 2638 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 36,535 psi | 59% | 2546 fps | 97.9% |
| IMR 4895 | <<locked>> | 80% | 51,663 psi | 83% | 2822 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,502 psi | 81% | 2789 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 98% | 49,588 psi | 80% | 2877 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 49,530 psi | 79% | 2733 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,886 psi | 66% | 2592 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 39,160 psi | 63% | 2572 fps | 96.2% |
| Lovex S071 | <<locked>> | 92% | 35,317 psi | 57% | 2520 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 49,748 psi | 80% | 2782 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,310 psi | 73% | 2736 fps | 95.8% |
| Norma MRP | 49.7 gr | 88% | 38,261 psi | 61% | 2680 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 37,782 psi | 61% | 2589 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 50,314 psi | 81% | 2805 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,311 psi | 74% | 2825 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 36,637 psi | 59% | 2575 fps | 96.1% |
| Ramshot Magnum | <<locked>> | 96% | 41,307 psi | 66% | 2703 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,804 psi | 45% | 1634 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,051 psi | 77% | 2733 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,599 psi | 72% | 2785 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,623 psi | 60% | 2608 fps | 97.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,622 psi | 59% | 2618 fps | 97.2% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,276 psi | 61% | 2710 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 51,285 psi | 82% | 2746 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,020 psi | 72% | 2687 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,441 psi | 74% | 2723 fps | 95% |
| Rottweil R 905 | <<locked>> | 90% | 43,482 psi | 70% | 2723 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 41,800 psi | 67% | 2608 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,886 psi | 66% | 2592 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 49,530 psi | 79% | 2733 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,160 psi | 63% | 2572 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,137 psi | 74% | 2740 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,151 psi | 74% | 2592 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,900 psi | 64% | 2533 fps | 96.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,091 psi | 69% | 2717 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 45,179 psi | 72% | 2684 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,778 psi | 81% | 2772 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 34,171 psi | 55% | 2543 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 38,711 psi | 62% | 2589 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 51,590 psi | 83% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,764 psi | 83% | 2723 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,221 psi | 69% | 2615 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,001 psi | 63% | 2585 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 40,553 psi | 65% | 2621 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 49,966 psi | 80% | 2717 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,580 psi | 62% | 2589 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 80% | 29,907 psi | 48% | 2431 fps | 96.1% |
| Vihtavuori N560 | <<locked>> | 96% | 51,024 psi | 82% | 2920 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,116 psi | 61% | 2556 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 39,929 psi | 64% | 2641 fps | 96.3% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,585 psi | 41% | 2382 fps | 95.6% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,642 psi | 70% | 2690 fps | 95.5% |
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 89 powders for 6.5 x 64 Brenneke loaded with the .264 | 128gr | MRR Green Long Range. Alliant Reloder-26 delivers the highest muzzle velocity at 3,041 fps; across all powders the maximum-charge window runs from 1,788 fps to 3,041 fps. Accurate 3100 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 128.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, 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. Alliant Reloder-26, Accurate High Country, Norma MRP rank at the top here: for 6.5 x 64 Brenneke with the .264 | 128gr | MRR Green Long Range 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.