Load Specifications
Load data in caliber 6.5 x 64 Brenneke with .264 | 144gr | Sierra MatchKing bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and Accurate High Country.
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 3100 | <<locked>> | 96% | 53,708 psi | 86% | 2717 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,608 psi | 89% | 2753 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,795 psi | 88% | 2854 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 96% | 55,898 psi | 90% | 2858 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 53,824 psi | 86% | 2667 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,043 psi | 90% | 2802 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 96% | 53,896 psi | 86% | 2805 fps | 98.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,976 psi | 72% | 2641 fps | 96.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,885 psi | 64% | 2602 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,969 psi | 88% | 2690 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,304 psi | 90% | 2805 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,621 psi | 86% | 2769 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,593 psi | 89% | 2792 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,534 psi | 86% | 2802 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,259 psi | 87% | 2779 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,198 psi | 80% | 2779 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,317 psi | 87% | 2861 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,999 psi | 90% | 2838 fps | 99.3% |
| Bofors RP3 | <<locked>> | 82% | 55,883 psi | 90% | 2707 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,166 psi | 74% | 2710 fps | 97.2% |
| Bofors RP5 | <<locked>> | 96% | 53,534 psi | 86% | 2802 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 54,882 psi | 88% | 2703 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,458 psi | 79% | 2726 fps | 98% |
| Hodgdon H380 | <<locked>> | 82% | 56,057 psi | 90% | 2730 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 53,737 psi | 86% | 2753 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 84% | 53,185 psi | 85% | 2710 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 94% | 53,911 psi | 86% | 2746 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,924 psi | 85% | 2733 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 53,214 psi | 85% | 2687 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,197 psi | 79% | 2831 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 86% | 53,882 psi | 86% | 2789 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,898 psi | 59% | 1693 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,260 psi | 90% | 2740 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,362 psi | 90% | 2726 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 55,753 psi | 89% | 2743 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,158 psi | 88% | 2733 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 98% | 55,056 psi | 88% | 2835 fps | 98.4% |
| Lovex S065 | <<locked>> | 86% | 53,635 psi | 86% | 2677 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,795 psi | 88% | 2717 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,082 psi | 82% | 2680 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 53,345 psi | 86% | 2736 fps | 98.8% |
| Norma MRP | <<locked>> | 94% | 52,953 psi | 85% | 2818 fps | 99.7% |
| Norma URP | <<locked>> | 88% | 53,911 psi | 86% | 2736 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,608 psi | 89% | 2854 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 90% | 56,260 psi | 90% | 2792 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,809 psi | 86% | 2795 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,536 psi | 60% | 1732 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,680 psi | 89% | 2713 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,185 psi | 85% | 2759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,187 psi | 88% | 2776 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,650 psi | 86% | 2802 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,313 psi | 79% | 2825 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 84% | 56,101 psi | 90% | 2707 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,041 psi | 87% | 2720 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 94% | 54,940 psi | 88% | 2779 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 86% | 54,882 psi | 88% | 2703 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,635 psi | 86% | 2677 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,795 psi | 88% | 2717 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,070 psi | 87% | 2713 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,304 psi | 90% | 2585 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,405 psi | 90% | 2684 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,491 psi | 87% | 2776 fps | 99.1% |
| Somchem S355 | <<locked>> | 84% | 55,840 psi | 90% | 2700 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,651 psi | 89% | 2717 fps | 97.7% |
| Somchem S365 | <<locked>> | 90% | 54,012 psi | 87% | 2740 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,709 psi | 89% | 2759 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 84% | 53,577 psi | 86% | 2628 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,057 psi | 90% | 2733 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,998 psi | 88% | 2736 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 88% | 55,056 psi | 88% | 2736 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,243 psi | 85% | 2753 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 53,011 psi | 85% | 2812 fps | 97.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,663 psi | 84% | 2792 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,390 psi | 89% | 2694 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,737 psi | 86% | 2753 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,621 psi | 88% | 2904 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,579 psi | 89% | 2753 fps | 99.1% |
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 3100 | <<locked>> | 80% | 31,343 psi | 50% | 2293 fps | 95.8% |
| Accurate 4350 | <<locked>> | 80% | 42,264 psi | 68% | 2543 fps | 99.7% |
| Accurate High Country | 48.7 gr | 86% | 41,597 psi | 67% | 2618 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 90% | 45,136 psi | 72% | 2674 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 50,473 psi | 81% | 2618 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,029 psi | 61% | 2474 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 90% | 44,092 psi | 71% | 2628 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 98% | 42,061 psi | 67% | 2582 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 94% | 32,953 psi | 53% | 2425 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,576 psi | 83% | 2641 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,741 psi | 65% | 2549 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,528 psi | 75% | 2661 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,826 psi | 61% | 2467 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,319 psi | 61% | 2520 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,197 psi | 48% | 2326 fps | 98.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,936 psi | 48% | 2336 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,547 psi | 52% | 2444 fps | 97.7% |
| Bofors RP15 | <<locked>> | 88% | 37,811 psi | 61% | 2507 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 52,344 psi | 84% | 2657 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 40,263 psi | 65% | 2592 fps | 95.4% |
| Bofors RP5 | <<locked>> | 86% | 38,319 psi | 61% | 2520 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 45,556 psi | 73% | 2546 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 94% | 40,379 psi | 65% | 2549 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 52,533 psi | 84% | 2674 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,150 psi | 71% | 2589 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 80% | 46,804 psi | 75% | 2602 fps | 98% |
| Hodgdon H4831 | <<locked>> | 88% | 44,077 psi | 71% | 2575 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,253 psi | 74% | 2618 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,348 psi | 61% | 2441 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,884 psi | 61% | 2585 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 43,018 psi | 69% | 2605 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,528 psi | 44% | 1509 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,162 psi | 66% | 2484 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,934 psi | 75% | 2572 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 40,335 psi | 65% | 2490 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 43,047 psi | 69% | 2523 fps | 95% |
| IMR 7828 SSC | <<locked>> | 90% | 42,337 psi | 68% | 2605 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 44,585 psi | 71% | 2526 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 42,931 psi | 69% | 2516 fps | 98.5% |
| Lovex S071 | <<locked>> | 84% | 30,734 psi | 49% | 2280 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 40,712 psi | 65% | 2510 fps | 96% |
| Norma MRP | 46.4 gr | 82% | 34,853 psi | 56% | 2467 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 41,858 psi | 67% | 2533 fps | 99.7% |
| Ramshot Grand | <<locked>> | 90% | 41,800 psi | 67% | 2608 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 40,437 psi | 65% | 2523 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 88% | 34,737 psi | 56% | 2431 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,152 psi | 45% | 1549 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,286 psi | 84% | 2664 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,356 psi | 79% | 2703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,119 psi | 68% | 2559 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,596 psi | 65% | 2572 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,737 psi | 56% | 2503 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 49,472 psi | 79% | 2612 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 41,872 psi | 67% | 2507 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 82% | 37,130 psi | 60% | 2454 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 45,556 psi | 73% | 2546 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,585 psi | 71% | 2526 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 42,931 psi | 69% | 2516 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,401 psi | 81% | 2661 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,980 psi | 80% | 2500 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,511 psi | 70% | 2474 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 36,796 psi | 59% | 2448 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 49,371 psi | 79% | 2605 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,600 psi | 73% | 2552 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 38,508 psi | 62% | 2493 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,288 psi | 57% | 2385 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 47,268 psi | 76% | 2536 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,076 psi | 69% | 2526 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 37,173 psi | 60% | 2421 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 42,612 psi | 68% | 2533 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 33,794 psi | 54% | 2398 fps | 98.7% |
| Vihtavuori N560 | 49.8 gr | 88% | 43,178 psi | 69% | 2631 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 94% | 42,859 psi | 69% | 2618 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,003 psi | 67% | 2493 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,150 psi | 71% | 2589 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,643 psi | 43% | 2320 fps | 98.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,291 psi | 63% | 2474 fps | 95.8% |
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 77 powders for 6.5 x 64 Brenneke loaded with the .264 | 144gr | Sierra MatchKing. Winchester StaBALL HD delivers the highest muzzle velocity at 2,904 fps; across all powders the maximum-charge window runs from 1,693 fps to 2,904 fps. ADI AR 2217 gives the best case fill at 100 %, and 77 of the 77 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 144.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Vihtavuori N560, Norma MRP, Accurate High Country rank at the top here: for 6.5 x 64 Brenneke with the .264 | 144gr | 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.