Load Specifications
Load data in caliber 6.5 x 64 Brenneke with .264 | 140gr | Sierra MatchKing bullet and 76 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% | 53,287 psi | 85% | 2749 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 55,085 psi | 88% | 2789 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,665 psi | 88% | 2890 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 96% | 55,303 psi | 89% | 2890 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 53,592 psi | 86% | 2707 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,738 psi | 89% | 2838 fps | 99% |
| ADI AR 2213 | <<locked>> | 96% | 53,476 psi | 86% | 2835 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,523 psi | 63% | 2625 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,723 psi | 88% | 2730 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,825 psi | 90% | 2841 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,417 psi | 86% | 2808 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,259 psi | 89% | 2825 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,098 psi | 85% | 2835 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 53,824 psi | 86% | 2812 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,705 psi | 80% | 2808 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,027 psi | 87% | 2897 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,492 psi | 89% | 2871 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 55,535 psi | 89% | 2746 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,643 psi | 73% | 2736 fps | 96.8% |
| Bofors RP5 | <<locked>> | 96% | 53,098 psi | 85% | 2835 fps | 98.9% |
| Bofors RP7 | <<locked>> | 86% | 54,578 psi | 88% | 2736 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,269 psi | 79% | 2759 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 82% | 55,695 psi | 89% | 2762 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 53,243 psi | 85% | 2782 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 56,246 psi | 90% | 2799 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 94% | 53,534 psi | 86% | 2779 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,173 psi | 90% | 2822 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,347 psi | 90% | 2769 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,718 psi | 78% | 2858 fps | 99% |
| Hodgdon Superformance | <<locked>> | 86% | 53,490 psi | 86% | 2822 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,898 psi | 59% | 1726 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,753 psi | 89% | 2772 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,043 psi | 90% | 2759 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 55,521 psi | 89% | 2782 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,897 psi | 88% | 2766 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 98% | 54,926 psi | 88% | 2874 fps | 98.2% |
| Lovex S065 | <<locked>> | 88% | 56,376 psi | 90% | 2759 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,636 psi | 88% | 2756 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,734 psi | 81% | 2710 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 53,142 psi | 85% | 2772 fps | 98.6% |
| Norma MRP | <<locked>> | 94% | 52,794 psi | 85% | 2858 fps | 99.6% |
| Norma URP | <<locked>> | 88% | 53,751 psi | 86% | 2772 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,347 psi | 89% | 2890 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 55,912 psi | 90% | 2828 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,447 psi | 86% | 2828 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,507 psi | 60% | 1762 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,347 psi | 89% | 2749 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 52,692 psi | 84% | 2795 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,911 psi | 88% | 2812 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,316 psi | 85% | 2841 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,936 psi | 78% | 2858 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 84% | 55,753 psi | 89% | 2743 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,824 psi | 86% | 2756 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 94% | 54,636 psi | 88% | 2815 fps | 99% |
| Rottweil R 907 | <<locked>> | 86% | 54,578 psi | 88% | 2736 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,376 psi | 90% | 2759 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,636 psi | 88% | 2756 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,679 psi | 86% | 2749 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,101 psi | 90% | 2621 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,941 psi | 90% | 2713 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,186 psi | 87% | 2808 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 55,492 psi | 89% | 2736 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,245 psi | 89% | 2746 fps | 97.4% |
| Somchem S365 | <<locked>> | 90% | 53,432 psi | 86% | 2772 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,347 psi | 89% | 2792 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 84% | 53,258 psi | 85% | 2664 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,564 psi | 89% | 2766 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,592 psi | 88% | 2769 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 88% | 54,824 psi | 88% | 2772 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 52,910 psi | 85% | 2789 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 52,881 psi | 85% | 2848 fps | 97.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,098 psi | 84% | 2822 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,998 psi | 88% | 2730 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,548 psi | 86% | 2789 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,201 psi | 87% | 2943 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,158 psi | 88% | 2785 fps | 98.9% |
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% | 31,125 psi | 50% | 2320 fps | 95.4% |
| Accurate 4350 | <<locked>> | 80% | 42,003 psi | 67% | 2572 fps | 99.6% |
| Accurate High Country | <<locked>> | 86% | 41,423 psi | 66% | 2648 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 92% | 48,124 psi | 77% | 2766 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 50,343 psi | 81% | 2654 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,118 psi | 64% | 2552 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 90% | 43,642 psi | 70% | 2654 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 96% | 34,853 psi | 56% | 2507 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,343 psi | 82% | 2677 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,306 psi | 65% | 2579 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,427 psi | 74% | 2700 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,089 psi | 64% | 2552 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 86% | 37,956 psi | 61% | 2546 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,863 psi | 48% | 2349 fps | 98.5% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,718 psi | 48% | 2359 fps | 95.2% |
| Alliant Reloder-26 | 47.4 gr | 80% | 32,227 psi | 52% | 2467 fps | 97.4% |
| Bofors RP15 | <<locked>> | 90% | 40,248 psi | 65% | 2595 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 52,069 psi | 83% | 2694 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 39,943 psi | 64% | 2621 fps | 95% |
| Bofors RP5 | <<locked>> | 86% | 37,956 psi | 61% | 2546 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 45,368 psi | 73% | 2582 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 94% | 40,118 psi | 64% | 2575 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 52,257 psi | 84% | 2713 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,627 psi | 70% | 2615 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 80% | 46,543 psi | 75% | 2638 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 90% | 46,891 psi | 75% | 2667 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,759 psi | 73% | 2644 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,159 psi | 61% | 2474 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,623 psi | 60% | 2612 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 42,830 psi | 69% | 2635 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,659 psi | 44% | 1542 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,959 psi | 66% | 2513 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,760 psi | 75% | 2608 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 40,089 psi | 64% | 2523 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,484 psi | 73% | 2605 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 92% | 44,744 psi | 72% | 2690 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 44,150 psi | 71% | 2556 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 42,482 psi | 68% | 2543 fps | 98.2% |
| Lovex S071 | <<locked>> | 84% | 30,530 psi | 49% | 2306 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 40,437 psi | 65% | 2539 fps | 95.7% |
| Norma MRP | 47.2 gr | 82% | 34,737 psi | 56% | 2500 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 41,394 psi | 66% | 2562 fps | 99.5% |
| Ramshot Grand | <<locked>> | 90% | 41,539 psi | 67% | 2635 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 40,161 psi | 64% | 2552 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 90% | 37,130 psi | 60% | 2523 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,050 psi | 45% | 1575 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,982 psi | 83% | 2697 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,240 psi | 79% | 2743 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,771 psi | 67% | 2592 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,248 psi | 65% | 2605 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,476 psi | 55% | 2526 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 48,921 psi | 78% | 2641 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,367 psi | 71% | 2589 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 84% | 39,189 psi | 63% | 2533 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 45,368 psi | 73% | 2582 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,150 psi | 71% | 2556 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 80% | 42,482 psi | 68% | 2543 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,096 psi | 80% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,574 psi | 79% | 2536 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,308 psi | 69% | 2507 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,841 psi | 62% | 2530 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 48,892 psi | 78% | 2638 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,382 psi | 73% | 2582 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 38,232 psi | 61% | 2523 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,070 psi | 56% | 2411 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 46,818 psi | 75% | 2569 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,830 psi | 69% | 2559 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 36,854 psi | 59% | 2448 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 42,337 psi | 68% | 2562 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 33,388 psi | 54% | 2421 fps | 98.4% |
| Vihtavuori N560 | 51.8 gr | 90% | 46,093 psi | 74% | 2726 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 96% | 45,643 psi | 73% | 2707 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,669 psi | 67% | 2523 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,874 psi | 70% | 2621 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,455 psi | 42% | 2343 fps | 98.1% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,160 psi | 63% | 2503 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 76 powders for 6.5 x 64 Brenneke loaded with the .264 | 140gr | Sierra MatchKing. Winchester StaBALL HD delivers the highest muzzle velocity at 2,943 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,943 fps. ADI AR 2225 gives the best case fill at 100 %, and 76 of the 76 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 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP15 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 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.