Load Specifications
Load data in caliber 6.5 x 64 Brenneke with .264 | 142gr | Sierra MatchKing bullet and 79 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 3100 | <<locked>> | 96% | 52,736 psi | 85% | 2720 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 54,708 psi | 88% | 2759 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 53,853 psi | 86% | 2858 fps | 98.2% |
| Accurate MAGPRO | <<locked>> | 96% | 54,897 psi | 88% | 2861 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 53,069 psi | 85% | 2674 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,172 psi | 88% | 2805 fps | 99% |
| ADI AR 2213 | <<locked>> | 96% | 53,084 psi | 85% | 2805 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,262 psi | 63% | 2598 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,186 psi | 87% | 2697 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,419 psi | 89% | 2812 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 52,678 psi | 84% | 2776 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,723 psi | 88% | 2795 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,275 psi | 90% | 2861 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 53,287 psi | 85% | 2782 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,342 psi | 79% | 2782 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,272 psi | 85% | 2864 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,100 psi | 88% | 2841 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 55,042 psi | 88% | 2713 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,266 psi | 73% | 2710 fps | 96.8% |
| Bofors RP5 | <<locked>> | 98% | 56,275 psi | 90% | 2861 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 54,143 psi | 87% | 2707 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,689 psi | 78% | 2726 fps | 97.7% |
| Hodgdon H380 | <<locked>> | 82% | 55,201 psi | 89% | 2733 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,434 psi | 90% | 2808 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 55,898 psi | 90% | 2769 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 94% | 53,055 psi | 85% | 2749 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,738 psi | 89% | 2789 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,651 psi | 89% | 2736 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,385 psi | 78% | 2831 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 86% | 52,678 psi | 84% | 2785 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,767 psi | 59% | 1703 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,869 psi | 90% | 2703 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,463 psi | 89% | 2746 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,637 psi | 89% | 2730 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 54,853 psi | 88% | 2749 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,404 psi | 87% | 2736 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 98% | 54,186 psi | 87% | 2838 fps | 98.1% |
| Lovex S062 | <<locked>> | 82% | 56,260 psi | 90% | 2697 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,999 psi | 90% | 2726 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,302 psi | 87% | 2726 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,198 psi | 80% | 2684 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 56,173 psi | 90% | 2795 fps | 99% |
| Norma MRP | <<locked>> | 96% | 56,014 psi | 90% | 2884 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 53,374 psi | 86% | 2746 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,665 psi | 88% | 2854 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 55,390 psi | 89% | 2795 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,895 psi | 85% | 2795 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,652 psi | 60% | 1745 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,940 psi | 88% | 2720 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,970 psi | 90% | 2815 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,259 psi | 87% | 2779 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,405 psi | 90% | 2861 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,457 psi | 78% | 2825 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 84% | 55,230 psi | 89% | 2713 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,243 psi | 85% | 2723 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 94% | 54,056 psi | 87% | 2782 fps | 99% |
| Rottweil R 907 | <<locked>> | 86% | 54,143 psi | 87% | 2707 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,999 psi | 90% | 2726 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,260 psi | 90% | 2697 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,302 psi | 87% | 2726 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,229 psi | 85% | 2720 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,535 psi | 89% | 2592 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,622 psi | 89% | 2687 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 53,606 psi | 86% | 2779 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 54,984 psi | 88% | 2707 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,897 psi | 88% | 2720 fps | 97.4% |
| Somchem S365 | <<locked>> | 90% | 53,026 psi | 85% | 2746 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,853 psi | 88% | 2762 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 86% | 56,333 psi | 90% | 2684 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,172 psi | 88% | 2736 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,157 psi | 87% | 2740 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 88% | 54,215 psi | 87% | 2743 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,927 psi | 90% | 2808 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,072 psi | 90% | 2877 fps | 98% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,416 psi | 82% | 2789 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,505 psi | 87% | 2700 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,214 psi | 85% | 2759 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,374 psi | 86% | 2907 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,737 psi | 88% | 2756 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% | 30,690 psi | 49% | 2293 fps | 95.3% |
| Accurate 4350 | <<locked>> | 80% | 41,452 psi | 66% | 2539 fps | 99.6% |
| Accurate High Country | 49.6 gr | 88% | 43,685 psi | 70% | 2674 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 92% | 47,703 psi | 76% | 2740 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 50,053 psi | 80% | 2628 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,972 psi | 64% | 2530 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 90% | 43,410 psi | 70% | 2628 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 96% | 34,519 psi | 55% | 2480 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,778 psi | 81% | 2648 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,001 psi | 64% | 2549 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,948 psi | 74% | 2671 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,711 psi | 64% | 2523 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 86% | 37,594 psi | 60% | 2520 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,646 psi | 48% | 2323 fps | 98.5% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,588 psi | 47% | 2336 fps | 95.2% |
| Alliant Reloder-26 | 46.5 gr | 80% | 31,923 psi | 51% | 2441 fps | 97.3% |
| Bofors RP15 | <<locked>> | 90% | 39,697 psi | 64% | 2562 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 51,532 psi | 83% | 2664 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,293 psi | 68% | 2651 fps | 95.9% |
| Bofors RP5 | <<locked>> | 86% | 37,594 psi | 60% | 2520 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 44,860 psi | 72% | 2549 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 96% | 42,511 psi | 68% | 2605 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 51,735 psi | 83% | 2680 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,424 psi | 70% | 2592 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 80% | 46,079 psi | 74% | 2605 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 90% | 46,354 psi | 74% | 2635 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,513 psi | 73% | 2618 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,608 psi | 60% | 2441 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,231 psi | 60% | 2579 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 42,482 psi | 68% | 2608 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,615 psi | 44% | 1522 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,678 psi | 84% | 2657 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,495 psi | 65% | 2484 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,267 psi | 74% | 2575 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 39,871 psi | 64% | 2497 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,194 psi | 72% | 2579 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 92% | 44,498 psi | 71% | 2664 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 53,084 psi | 85% | 2654 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,918 psi | 70% | 2530 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 42,235 psi | 68% | 2516 fps | 98.2% |
| Lovex S071 | <<locked>> | 84% | 30,139 psi | 48% | 2277 fps | 95% |
| Norma 204 | <<locked>> | 80% | 40,263 psi | 65% | 2516 fps | 95.7% |
| Norma MRP | 46.3 gr | 82% | 34,389 psi | 55% | 2470 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 41,118 psi | 66% | 2536 fps | 99.5% |
| Ramshot Grand | <<locked>> | 90% | 41,075 psi | 66% | 2605 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 39,958 psi | 64% | 2530 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 90% | 36,753 psi | 59% | 2493 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,239 psi | 45% | 1558 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,576 psi | 83% | 2667 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,762 psi | 78% | 2713 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,365 psi | 66% | 2562 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,885 psi | 64% | 2575 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,156 psi | 55% | 2500 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 48,675 psi | 78% | 2615 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 43,990 psi | 71% | 2562 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 84% | 39,044 psi | 63% | 2510 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 44,860 psi | 72% | 2549 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,918 psi | 70% | 2530 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 53,084 psi | 85% | 2654 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,235 psi | 68% | 2516 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,879 psi | 80% | 2667 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,255 psi | 79% | 2507 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,844 psi | 69% | 2477 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,696 psi | 62% | 2503 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 48,602 psi | 78% | 2612 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 44,962 psi | 72% | 2552 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 37,710 psi | 60% | 2493 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,664 psi | 56% | 2385 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 46,572 psi | 75% | 2543 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,337 psi | 68% | 2530 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 36,535 psi | 59% | 2421 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 41,916 psi | 67% | 2536 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 33,112 psi | 53% | 2398 fps | 98.4% |
| Vihtavuori N560 | <<locked>> | 90% | 45,614 psi | 73% | 2697 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 96% | 44,962 psi | 72% | 2674 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,307 psi | 66% | 2497 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,424 psi | 70% | 2592 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,295 psi | 42% | 2320 fps | 98.1% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,885 psi | 62% | 2477 fps | 95.4% |
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 79 powders for 6.5 x 64 Brenneke loaded with the .264 | 142gr | Sierra MatchKing. Winchester StaBALL HD delivers the highest muzzle velocity at 2,907 fps; across all powders the maximum-charge window runs from 1,703 fps to 2,907 fps. ADI AR 2225 gives the best case fill at 100 %, and 79 of the 79 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 142.0 gr projectile in 0.264" calls for a 1:8.5 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. Alliant Reloder-26, Accurate High Country, Norma MRP rank at the top here: for 6.5 x 64 Brenneke with the .264 | 142gr | 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.