Load Specifications
Load data in caliber 6.5 x 64 Brenneke with .264 | 123gr | Sierra MatchKing bullet and 87 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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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 55,521 psi | 89% | 2825 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 53,185 psi | 85% | 2838 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,737 psi | 88% | 2936 fps | 99.5% |
| Accurate 4064 | <<locked>> | 84% | 55,970 psi | 90% | 2881 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 52,982 psi | 85% | 2930 fps | 99.9% |
| Accurate High Country | <<locked>> | 98% | 55,724 psi | 89% | 3077 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 86% | 55,854 psi | 90% | 2913 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,186 psi | 87% | 2972 fps | 97.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,463 psi | 89% | 3025 fps | 96.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,347 psi | 89% | 3035 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,317 psi | 87% | 2969 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,185 psi | 85% | 2881 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,476 psi | 86% | 2904 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 53,824 psi | 86% | 2992 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,056 psi | 88% | 3012 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,577 psi | 86% | 2963 fps | 97.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,389 psi | 87% | 3022 fps | 98% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,416 psi | 82% | 2953 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,715 psi | 72% | 2874 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,969 psi | 88% | 3091 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,864 psi | 80% | 2940 fps | 96.9% |
| Bofors RP3 | <<locked>> | 84% | 54,070 psi | 87% | 2897 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,389 psi | 87% | 3022 fps | 98% |
| Bofors RP7 | <<locked>> | 88% | 53,490 psi | 86% | 2881 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 84% | 54,404 psi | 87% | 2913 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 55,158 psi | 88% | 2982 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 88% | 54,839 psi | 88% | 2940 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 98% | 55,463 psi | 89% | 2966 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,056 psi | 87% | 2910 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,608 psi | 89% | 2949 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 55,622 psi | 89% | 3022 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,448 psi | 58% | 1831 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,144 psi | 90% | 2913 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,259 psi | 89% | 2890 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,331 psi | 87% | 2871 fps | 98.9% |
| IMR 4350 | <<locked>> | 92% | 54,578 psi | 88% | 2917 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,013 psi | 88% | 2907 fps | 98.9% |
| IMR 4831 | <<locked>> | 92% | 53,563 psi | 86% | 2923 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,911 psi | 88% | 2933 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,737 psi | 86% | 2900 fps | 95.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,736 psi | 85% | 2992 fps | 96.2% |
| Lovex S062 | <<locked>> | 84% | 55,506 psi | 89% | 2887 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,114 psi | 88% | 2904 fps | 99.7% |
| Lovex S070 | <<locked>> | 90% | 53,214 psi | 85% | 2897 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,542 psi | 73% | 2782 fps | 98.3% |
| Norma 203B | <<locked>> | 84% | 56,246 psi | 90% | 2943 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,230 psi | 89% | 2966 fps | 97.7% |
| Norma MRP | <<locked>> | 98% | 53,809 psi | 86% | 3045 fps | 99% |
| Norma URP | <<locked>> | 92% | 55,477 psi | 89% | 2972 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,534 psi | 86% | 2917 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,127 psi | 85% | 3009 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 92% | 54,172 psi | 87% | 2969 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,311 psi | 76% | 2874 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,231 psi | 60% | 1877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,404 psi | 87% | 2897 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,389 psi | 87% | 3005 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 52,881 psi | 85% | 2953 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,245 psi | 89% | 3038 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,685 psi | 70% | 2890 fps | 97.1% |
| Rottweil R 902 | <<locked>> | 82% | 54,273 psi | 87% | 2851 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,215 psi | 87% | 2897 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,724 psi | 89% | 2943 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 98% | 56,434 psi | 90% | 3009 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 53,490 psi | 86% | 2881 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,114 psi | 88% | 2904 fps | 99.7% |
| Shooters World Precision | <<locked>> | 84% | 55,506 psi | 89% | 2887 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,214 psi | 85% | 2897 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,854 psi | 90% | 2956 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,100 psi | 88% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,781 psi | 88% | 2858 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,941 psi | 90% | 3002 fps | 98.2% |
| Somchem S355 | <<locked>> | 86% | 54,230 psi | 87% | 2894 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 54,853 psi | 88% | 2976 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,243 psi | 85% | 2920 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 82% | 54,447 psi | 87% | 2808 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,708 psi | 88% | 2825 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,448 psi | 89% | 2867 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 53,853 psi | 86% | 2910 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,678 psi | 84% | 2897 fps | 98% |
| Vihtavuori N540 | <<locked>> | 84% | 56,347 psi | 90% | 2867 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,055 psi | 85% | 2917 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 53,809 psi | 86% | 2979 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,099 psi | 87% | 3031 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,403 psi | 86% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,492 psi | 89% | 2986 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,485 psi | 75% | 3012 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,359 psi | 86% | 2913 fps | 97.5% |
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% | 52,025 psi | 83% | 2776 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,647 psi | 80% | 2779 fps | 97.6% |
| Accurate 3100 | <<locked>> | 88% | 36,260 psi | 58% | 2592 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 49,255 psi | 79% | 2779 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,681 psi | 60% | 2641 fps | 97.9% |
| Accurate High Country | 54.4 gr | 94% | 48,472 psi | 78% | 2946 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 46,499 psi | 75% | 2753 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 44,541 psi | 71% | 2795 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 98% | 51,938 psi | 83% | 2963 fps | 95.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,517 psi | 83% | 2972 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 44,498 psi | 71% | 2792 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,123 psi | 76% | 2782 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,212 psi | 81% | 2851 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,579 psi | 59% | 2648 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,437 psi | 66% | 2776 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 43,976 psi | 71% | 2782 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 44,382 psi | 71% | 2835 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,861 psi | 43% | 2392 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 92% | 34,679 psi | 56% | 2631 fps | 95.7% |
| Alliant Reloder-26 | 50.1 gr | 84% | 32,996 psi | 53% | 2631 fps | 95.9% |
| Bofors RP15 | <<locked>> | 96% | 43,758 psi | 70% | 2822 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 47,485 psi | 76% | 2792 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 44,382 psi | 71% | 2835 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 41,727 psi | 67% | 2657 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 47,558 psi | 76% | 2799 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 39,465 psi | 63% | 2684 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 80% | 42,583 psi | 68% | 2710 fps | 95.2% |
| Hodgdon H4831 | <<locked>> | 96% | 51,924 psi | 83% | 2907 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,113 psi | 55% | 2539 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,185 psi | 84% | 2897 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 41,321 psi | 66% | 2756 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,325 psi | 44% | 1637 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,707 psi | 85% | 2861 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,921 psi | 78% | 2789 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,068 psi | 82% | 2815 fps | 98.5% |
| IMR 4350 | <<locked>> | 82% | 39,668 psi | 64% | 2635 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,902 psi | 69% | 2684 fps | 96.6% |
| IMR 4831 | <<locked>> | 80% | 36,201 psi | 58% | 2592 fps | 97.6% |
| IMR 4895 | <<locked>> | 80% | 51,517 psi | 83% | 2877 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,473 psi | 81% | 2844 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 98% | 49,342 psi | 79% | 2927 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 49,197 psi | 79% | 2789 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,553 psi | 65% | 2635 fps | 97.4% |
| Lovex S070 | <<locked>> | 80% | 38,841 psi | 62% | 2615 fps | 95.8% |
| Lovex S071 | <<locked>> | 92% | 35,186 psi | 56% | 2562 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 49,574 psi | 79% | 2835 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,121 psi | 72% | 2785 fps | 95.4% |
| Norma MRP | 50.9 gr | 88% | 38,000 psi | 61% | 2723 fps | 95% |
| Norma URP | <<locked>> | 80% | 37,434 psi | 60% | 2635 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 80% | 50,009 psi | 80% | 2861 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 49,603 psi | 80% | 2943 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 36,187 psi | 58% | 2615 fps | 95.6% |
| Ramshot Magnum | <<locked>> | 96% | 40,973 psi | 66% | 2746 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,615 psi | 44% | 1673 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,776 psi | 77% | 2782 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,019 psi | 71% | 2831 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,362 psi | 60% | 2654 fps | 97.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,347 psi | 58% | 2661 fps | 96.8% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 40,683 psi | 65% | 2818 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 50,966 psi | 82% | 2802 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,599 psi | 72% | 2733 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 49,037 psi | 79% | 2828 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 90% | 43,004 psi | 69% | 2762 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 41,727 psi | 67% | 2657 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,553 psi | 65% | 2635 fps | 97.4% |
| Shooters World Precision | <<locked>> | 80% | 49,197 psi | 79% | 2789 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,841 psi | 62% | 2615 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,643 psi | 73% | 2789 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,905 psi | 74% | 2644 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,798 psi | 64% | 2582 fps | 95.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,612 psi | 68% | 2759 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 44,860 psi | 72% | 2733 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 33,794 psi | 54% | 2589 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 40,944 psi | 66% | 2690 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 51,271 psi | 82% | 2766 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,358 psi | 82% | 2776 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,844 psi | 69% | 2664 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,856 psi | 62% | 2635 fps | 98.1% |
| Vihtavuori N165 | <<locked>> | 94% | 43,018 psi | 69% | 2723 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 49,501 psi | 79% | 2766 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,189 psi | 61% | 2631 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 80% | 29,573 psi | 47% | 2470 fps | 95.5% |
| Vihtavuori N560 | <<locked>> | 96% | 50,691 psi | 81% | 2969 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,029 psi | 61% | 2605 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 39,711 psi | 64% | 2690 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 84% | 27,050 psi | 43% | 2480 fps | 96.3% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,250 psi | 69% | 2733 fps | 95% |
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 87 powders for 6.5 x 64 Brenneke loaded with the .264 | 123gr | Sierra MatchKing. Alliant Reloder-26 delivers the highest muzzle velocity at 3,091 fps; across all powders the maximum-charge window runs from 1,831 fps to 3,091 fps. Accurate 3100 gives the best case fill at 100 %, and 87 of the 87 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.264" calls for a 1:9.0 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 | 123gr | Sierra MatchKing 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.