Load Specifications
Load data in caliber 6.5 x 64 Brenneke with .264 | 140gr | Sierra GameKing bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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% | 53,896 psi | 86% | 2759 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 55,796 psi | 89% | 2799 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 55,259 psi | 89% | 2904 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 96% | 56,144 psi | 90% | 2907 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 54,012 psi | 87% | 2713 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,304 psi | 90% | 2848 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 96% | 54,041 psi | 87% | 2848 fps | 98% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,020 psi | 72% | 2677 fps | 96.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,914 psi | 64% | 2635 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,114 psi | 88% | 2736 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 52,953 psi | 85% | 2802 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,824 psi | 86% | 2815 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,854 psi | 90% | 2838 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,693 psi | 86% | 2844 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,462 psi | 87% | 2822 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,270 psi | 81% | 2822 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,708 psi | 88% | 2910 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,115 psi | 90% | 2881 fps | 99.2% |
| Bofors RP3 | <<locked>> | 82% | 55,956 psi | 90% | 2753 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,209 psi | 74% | 2749 fps | 97% |
| Bofors RP5 | <<locked>> | 96% | 53,693 psi | 86% | 2844 fps | 99% |
| Bofors RP7 | <<locked>> | 86% | 55,216 psi | 89% | 2749 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,763 psi | 80% | 2769 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 82% | 56,072 psi | 90% | 2772 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 53,896 psi | 86% | 2799 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 84% | 53,171 psi | 85% | 2753 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 94% | 54,099 psi | 87% | 2792 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 94% | 53,156 psi | 85% | 2776 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 53,142 psi | 85% | 2726 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,197 psi | 79% | 2871 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 86% | 53,795 psi | 86% | 2828 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,753 psi | 59% | 1726 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,347 psi | 90% | 2782 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,258 psi | 85% | 2720 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 55,854 psi | 90% | 2789 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,405 psi | 89% | 2776 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 98% | 55,477 psi | 89% | 2884 fps | 98.3% |
| Lovex S065 | <<locked>> | 86% | 53,592 psi | 86% | 2720 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,969 psi | 88% | 2762 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,358 psi | 82% | 2723 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 53,722 psi | 86% | 2782 fps | 98.7% |
| Norma MRP | <<locked>> | 94% | 53,417 psi | 86% | 2867 fps | 99.7% |
| Norma URP | <<locked>> | 88% | 54,114 psi | 87% | 2779 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,941 psi | 90% | 2900 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 53,113 psi | 85% | 2789 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,983 psi | 87% | 2838 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,608 psi | 60% | 1768 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,970 psi | 90% | 2759 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,432 psi | 86% | 2805 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,579 psi | 89% | 2822 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,911 psi | 86% | 2851 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,676 psi | 80% | 2871 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 84% | 56,130 psi | 90% | 2749 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,418 psi | 87% | 2766 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 94% | 55,230 psi | 89% | 2825 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 55,216 psi | 89% | 2749 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,592 psi | 86% | 2720 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,969 psi | 88% | 2762 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,041 psi | 87% | 2756 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,997 psi | 85% | 2585 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,084 psi | 85% | 2677 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,781 psi | 88% | 2822 fps | 99.1% |
| Somchem S355 | <<locked>> | 84% | 55,898 psi | 90% | 2743 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,724 psi | 89% | 2759 fps | 97.6% |
| Somchem S365 | <<locked>> | 90% | 54,143 psi | 87% | 2785 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,941 psi | 90% | 2802 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 84% | 53,606 psi | 86% | 2671 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,231 psi | 90% | 2779 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,129 psi | 88% | 2779 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 88% | 55,129 psi | 88% | 2779 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,577 psi | 86% | 2799 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 53,447 psi | 86% | 2861 fps | 97.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,649 psi | 84% | 2831 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,593 psi | 89% | 2740 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,896 psi | 86% | 2799 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,288 psi | 89% | 2956 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,695 psi | 89% | 2795 fps | 99% |
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% | 31,444 psi | 50% | 2329 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 42,438 psi | 68% | 2582 fps | 99.7% |
| Accurate High Country | <<locked>> | 86% | 41,727 psi | 67% | 2657 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 92% | 48,660 psi | 78% | 2779 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 50,734 psi | 81% | 2664 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,101 psi | 61% | 2510 fps | 95% |
| ADI AR 2213 | <<locked>> | 90% | 44,164 psi | 71% | 2667 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 98% | 42,163 psi | 68% | 2618 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 96% | 35,230 psi | 56% | 2520 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,779 psi | 83% | 2687 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,683 psi | 65% | 2589 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,847 psi | 75% | 2707 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,898 psi | 61% | 2503 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,479 psi | 62% | 2559 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,168 psi | 48% | 2359 fps | 98.6% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,153 psi | 48% | 2375 fps | 95.5% |
| Alliant Reloder-26 | 47.8 gr | 80% | 32,532 psi | 52% | 2477 fps | 97.5% |
| Bofors RP15 | <<locked>> | 88% | 37,985 psi | 61% | 2546 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 52,475 psi | 84% | 2700 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 40,422 psi | 65% | 2635 fps | 95.3% |
| Bofors RP5 | <<locked>> | 86% | 38,479 psi | 62% | 2559 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 45,701 psi | 73% | 2589 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 94% | 40,567 psi | 65% | 2589 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 52,634 psi | 84% | 2720 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,251 psi | 71% | 2628 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 80% | 46,920 psi | 75% | 2644 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 90% | 47,166 psi | 76% | 2674 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,311 psi | 74% | 2657 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,551 psi | 62% | 2484 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 38,087 psi | 61% | 2625 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 43,149 psi | 69% | 2644 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,601 psi | 44% | 1542 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,263 psi | 66% | 2523 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,079 psi | 75% | 2615 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 40,495 psi | 65% | 2530 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,035 psi | 74% | 2618 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 90% | 42,380 psi | 68% | 2644 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 44,498 psi | 71% | 2566 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 42,815 psi | 69% | 2552 fps | 98.3% |
| Lovex S071 | <<locked>> | 84% | 30,879 psi | 50% | 2316 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 40,988 psi | 66% | 2552 fps | 95.9% |
| Norma MRP | 47.6 gr | 82% | 35,056 psi | 56% | 2507 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 41,756 psi | 67% | 2569 fps | 99.6% |
| Ramshot Grand | <<locked>> | 90% | 42,076 psi | 67% | 2651 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 40,712 psi | 65% | 2566 fps | 98.4% |
| Ramshot Magnum | <<locked>> | 90% | 37,362 psi | 60% | 2530 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,210 psi | 45% | 1581 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,330 psi | 84% | 2703 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,690 psi | 80% | 2753 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,134 psi | 68% | 2598 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,567 psi | 65% | 2612 fps | 99.3% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,867 psi | 56% | 2539 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 49,371 psi | 79% | 2651 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 42,134 psi | 68% | 2549 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 82% | 37,217 psi | 60% | 2490 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 45,701 psi | 73% | 2589 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,498 psi | 71% | 2566 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 80% | 42,815 psi | 69% | 2552 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,778 psi | 81% | 2707 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,966 psi | 80% | 2543 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,642 psi | 70% | 2516 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 39,421 psi | 63% | 2543 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 49,313 psi | 79% | 2644 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,905 psi | 74% | 2595 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 38,638 psi | 62% | 2533 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,389 psi | 57% | 2421 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 47,181 psi | 76% | 2575 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,236 psi | 69% | 2569 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 37,144 psi | 60% | 2457 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 42,670 psi | 68% | 2572 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 33,765 psi | 54% | 2434 fps | 98.6% |
| Vihtavuori N560 | 51.1 gr | 88% | 43,468 psi | 70% | 2677 fps | 95% |
| Vihtavuori N565 | <<locked>> | 94% | 43,004 psi | 69% | 2657 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,192 psi | 68% | 2536 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,251 psi | 71% | 2628 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,847 psi | 43% | 2356 fps | 98.4% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,450 psi | 63% | 2510 fps | 95.6% |
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 | 140gr | Sierra GameKing. Winchester StaBALL HD delivers the highest muzzle velocity at 2,956 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,956 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 140.0 gr projectile in 0.264" calls for a 1:10.0 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for 6.5 x 64 Brenneke with the .264 | 140gr | Sierra GameKing 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.