Load Specifications
Load data in caliber 6.5 x 64 Brenneke with .264 | 155gr | Sierra HPBT LR MatchKing bullet and 77 powders. The key underlying parameters are shown in the table above.
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>> | 94% | 52,866 psi | 85% | 2612 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,447 psi | 87% | 2641 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 54,244 psi | 87% | 2753 fps | 99% |
| Accurate MAGPRO | <<locked>> | 94% | 55,056 psi | 88% | 2753 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 82% | 55,941 psi | 90% | 2598 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,259 psi | 89% | 2697 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 52,939 psi | 85% | 2700 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,413 psi | 76% | 2602 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,930 psi | 67% | 2562 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,535 psi | 89% | 2694 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,663 psi | 84% | 2651 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,882 psi | 88% | 2687 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,866 psi | 85% | 2697 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,954 psi | 87% | 2671 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,127 psi | 85% | 2726 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,056 psi | 87% | 2753 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 54,911 psi | 88% | 2664 fps | 96.2% |
| Bofors RP15 | <<locked>> | 98% | 55,317 psi | 89% | 2733 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,863 psi | 78% | 2667 fps | 98.5% |
| Bofors RP5 | <<locked>> | 94% | 52,866 psi | 85% | 2697 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 53,679 psi | 86% | 2589 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,170 psi | 84% | 2684 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 86% | 56,159 psi | 90% | 2690 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 55,651 psi | 89% | 2654 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 52,866 psi | 85% | 2641 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,564 psi | 89% | 2680 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,709 psi | 89% | 2618 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,793 psi | 83% | 2785 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 52,794 psi | 85% | 2677 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,130 psi | 60% | 1634 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,288 psi | 89% | 2631 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,114 psi | 88% | 2612 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 54,911 psi | 88% | 2635 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,273 psi | 87% | 2628 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 54,230 psi | 87% | 2730 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 55,622 psi | 89% | 2612 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 53,809 psi | 86% | 2608 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,896 psi | 86% | 2625 fps | 100% |
| Norma 204 | <<locked>> | 88% | 55,811 psi | 89% | 2680 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 37,536 psi | 60% | 2493 fps | 97.6% |
| Norma MRP | <<locked>> | 94% | 56,130 psi | 90% | 2769 fps | 100% |
| Norma URP | <<locked>> | 86% | 53,011 psi | 85% | 2625 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,955 psi | 88% | 2749 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 88% | 55,245 psi | 89% | 2680 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 52,968 psi | 85% | 2687 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,797 psi | 61% | 1670 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,956 psi | 90% | 2690 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,317 psi | 87% | 2664 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,475 psi | 84% | 2687 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,214 psi | 84% | 2785 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,181 psi | 76% | 2674 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 82% | 54,955 psi | 88% | 2592 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 53,113 psi | 85% | 2615 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 92% | 54,288 psi | 87% | 2674 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 53,679 psi | 86% | 2589 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,622 psi | 89% | 2612 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 53,809 psi | 86% | 2608 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,289 psi | 90% | 2644 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,027 psi | 88% | 2470 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,839 psi | 88% | 2569 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,853 psi | 86% | 2671 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 54,636 psi | 88% | 2582 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,360 psi | 87% | 2608 fps | 98.2% |
| Somchem S365 | <<locked>> | 88% | 53,403 psi | 86% | 2631 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,766 psi | 88% | 2648 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 55,927 psi | 90% | 2562 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,795 psi | 88% | 2615 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,172 psi | 87% | 2631 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 53,940 psi | 86% | 2621 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 56,115 psi | 90% | 2694 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 56,057 psi | 90% | 2766 fps | 98.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 55,608 psi | 89% | 2743 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 48,675 psi | 78% | 2684 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,056 psi | 87% | 2579 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,953 psi | 85% | 2644 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,679 psi | 88% | 2795 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,636 psi | 88% | 2648 fps | 99.4% |
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 33,156 psi | 53% | 2257 fps | 97.4% |
| Accurate 4350 | <<locked>> | 80% | 44,556 psi | 71% | 2490 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 38,377 psi | 62% | 2461 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 88% | 44,686 psi | 72% | 2579 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 52,750 psi | 85% | 2556 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 37,275 psi | 60% | 2375 fps | 96% |
| ADI AR 2213 | <<locked>> | 86% | 40,422 psi | 65% | 2470 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 94% | 38,885 psi | 62% | 2434 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 92% | 32,547 psi | 52% | 2343 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,772 psi | 69% | 2497 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,153 psi | 79% | 2602 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,217 psi | 60% | 2369 fps | 96% |
| Alliant Reloder-22 | <<locked>> | 82% | 35,447 psi | 57% | 2372 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,879 psi | 51% | 2287 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,862 psi | 45% | 2198 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,490 psi | 55% | 2408 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 51,721 psi | 83% | 2612 fps | 95.5% |
| Bofors RP15 | <<locked>> | 84% | 35,230 psi | 56% | 2365 fps | 95.3% |
| Bofors RP30 | <<locked>> | 92% | 37,579 psi | 60% | 2451 fps | 95.5% |
| Bofors RP5 | <<locked>> | 82% | 35,447 psi | 57% | 2372 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 47,427 psi | 76% | 2490 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 37,318 psi | 60% | 2405 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 46,108 psi | 74% | 2533 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 48,878 psi | 78% | 2549 fps | 99% |
| Hodgdon H4831 | <<locked>> | 86% | 43,192 psi | 69% | 2477 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 86% | 42,380 psi | 68% | 2461 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,321 psi | 65% | 2388 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 35,201 psi | 56% | 2438 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 45,571 psi | 73% | 2559 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,862 psi | 45% | 1460 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,018 psi | 69% | 2431 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,820 psi | 78% | 2516 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 42,395 psi | 68% | 2438 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,264 psi | 68% | 2421 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 86% | 38,870 psi | 62% | 2451 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 46,456 psi | 74% | 2470 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 44,860 psi | 72% | 2464 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 28,674 psi | 46% | 2149 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 42,743 psi | 69% | 2464 fps | 97.4% |
| Norma 217 | <<locked>> | 96% | 33,011 psi | 53% | 2385 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 34,519 psi | 55% | 2379 fps | 96.7% |
| Norma URP | <<locked>> | 80% | 43,947 psi | 70% | 2480 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 38,435 psi | 62% | 2454 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 42,540 psi | 68% | 2474 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 86% | 34,272 psi | 55% | 2346 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,282 psi | 45% | 1490 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,199 psi | 84% | 2641 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,512 psi | 71% | 2510 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,554 psi | 68% | 2523 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 31,865 psi | 51% | 2352 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 43,714 psi | 70% | 2612 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 51,750 psi | 83% | 2546 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 38,638 psi | 62% | 2356 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 80% | 36,564 psi | 59% | 2356 fps | 96% |
| Rottweil R 907 | <<locked>> | 80% | 47,427 psi | 76% | 2490 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,456 psi | 74% | 2470 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 44,860 psi | 72% | 2464 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,750 psi | 85% | 2595 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,822 psi | 83% | 2431 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,368 psi | 73% | 2421 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,230 psi | 58% | 2352 fps | 95.9% |
| Somchem S355 | <<locked>> | 80% | 51,474 psi | 83% | 2539 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 41,974 psi | 67% | 2402 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 40,770 psi | 65% | 2441 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,144 psi | 60% | 2343 fps | 97% |
| Vihtavuori N150 | <<locked>> | 80% | 49,327 psi | 79% | 2474 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,179 psi | 72% | 2470 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 34,316 psi | 55% | 2277 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 44,701 psi | 72% | 2480 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 35,839 psi | 57% | 2356 fps | 99.6% |
| Vihtavuori N560 | <<locked>> | 84% | 39,827 psi | 64% | 2477 fps | 95% |
| Vihtavuori N565 | <<locked>> | 90% | 39,755 psi | 64% | 2470 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 98% | 45,194 psi | 72% | 2621 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,179 psi | 71% | 2441 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,412 psi | 74% | 2539 fps | 99.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,210 psi | 45% | 2297 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 36,216 psi | 58% | 2326 fps | 95.7% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 82 powders for 6.5 x 64 Brenneke loaded with the .264 | 155gr | Sierra HPBT LR MatchKing. Winchester StaBALL HD delivers the highest muzzle velocity at 2,795 fps; across all powders the maximum-charge window runs from 1,634 fps to 2,795 fps. ADI AR 2217 gives the best case fill at 100 %, and 82 of the 82 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.264" calls for a 1:8.5 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. As outliers, Alliant Reloder-33, IMR 7977 Enduron, Vihtavuori N170 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.