Load Specifications
Load data in caliber 6.5 x 64 (Reb) with .264 | 140gr | Lapua Naturalis bullet and 69 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Accurate MAGPRO.
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% | 55,709 psi | 89% | 2799 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 53,301 psi | 85% | 2776 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 53,737 psi | 86% | 2881 fps | 97.4% |
| ADI AR 2209 | <<locked>> | 90% | 53,722 psi | 86% | 2825 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 94% | 54,911 psi | 88% | 2881 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,211 psi | 79% | 2776 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,150 psi | 71% | 2743 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 86% | 53,751 psi | 86% | 2825 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,708 psi | 88% | 2838 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 53,113 psi | 85% | 2812 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,056 psi | 88% | 2881 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,101 psi | 90% | 2854 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,419 psi | 89% | 2913 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 52,678 psi | 84% | 2887 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 53,998 psi | 87% | 2864 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,561 psi | 83% | 2854 fps | 98.4% |
| Bofors RP5 | <<locked>> | 94% | 55,056 psi | 88% | 2881 fps | 99.3% |
| Bofors RP7 | <<locked>> | 84% | 55,448 psi | 89% | 2769 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,375 psi | 87% | 2867 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 84% | 54,592 psi | 88% | 2822 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 82% | 53,751 psi | 86% | 2779 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 92% | 54,737 psi | 88% | 2818 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 53,838 psi | 86% | 2805 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,215 psi | 87% | 2753 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,215 psi | 87% | 2979 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 84% | 54,810 psi | 88% | 2858 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,333 psi | 60% | 1755 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 53,403 psi | 86% | 2756 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 53,447 psi | 86% | 2740 fps | 99.7% |
| IMR 4831 | <<locked>> | 86% | 53,664 psi | 86% | 2769 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,898 psi | 90% | 2805 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 94% | 52,765 psi | 85% | 2858 fps | 98.2% |
| Lovex S065 | <<locked>> | 84% | 54,375 psi | 87% | 2743 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,956 psi | 90% | 2792 fps | 99.9% |
| Lovex S071 | <<locked>> | 98% | 53,316 psi | 85% | 2766 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,099 psi | 87% | 2805 fps | 99% |
| Norma 217ᴾ | <<locked>> | 100% | 40,016 psi | 64% | 2677 fps | 97.7% |
| Norma MRP | <<locked>> | 92% | 54,636 psi | 88% | 2900 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 55,230 psi | 89% | 2812 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 53,316 psi | 85% | 2877 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 86% | 53,751 psi | 86% | 2812 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,550 psi | 89% | 2877 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,247 psi | 61% | 1798 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 53,127 psi | 85% | 2799 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,737 psi | 88% | 2874 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,781 psi | 88% | 2976 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,777 psi | 80% | 2861 fps | 96.7% |
| Rottweil R 904 | <<locked>> | 90% | 54,911 psi | 88% | 2792 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 92% | 56,318 psi | 90% | 2858 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 84% | 55,448 psi | 89% | 2769 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,375 psi | 87% | 2743 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,956 psi | 90% | 2792 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 53,301 psi | 85% | 2694 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,869 psi | 90% | 2851 fps | 99.4% |
| Somchem S361 | <<locked>> | 88% | 52,852 psi | 85% | 2730 fps | 97.4% |
| Somchem S365 | <<locked>> | 88% | 55,521 psi | 89% | 2812 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 53,476 psi | 86% | 2779 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 82% | 54,404 psi | 87% | 2694 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 53,272 psi | 85% | 2749 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,173 psi | 90% | 2808 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 86% | 56,057 psi | 90% | 2805 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,376 psi | 89% | 2835 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,447 psi | 87% | 2890 fps | 98% |
| Vihtavuori N565 | <<locked>> | 98% | 54,650 psi | 88% | 2877 fps | 98.3% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,923 psi | 82% | 2864 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,999 psi | 90% | 2756 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,853 psi | 88% | 2825 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 53,563 psi | 86% | 2936 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 52,895 psi | 85% | 2769 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% | 35,433 psi | 57% | 2431 fps | 97.4% |
| Accurate 4350 | <<locked>> | 80% | 46,876 psi | 75% | 2671 fps | 100% |
| Accurate MAGPRO | 54.6 gr | 88% | 46,818 psi | 75% | 2756 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 38,754 psi | 62% | 2539 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 86% | 42,380 psi | 68% | 2648 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 94% | 40,741 psi | 65% | 2605 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 90% | 32,445 psi | 52% | 2457 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,440 psi | 71% | 2671 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,169 psi | 82% | 2785 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,914 psi | 62% | 2539 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 82% | 37,275 psi | 60% | 2539 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,721 psi | 54% | 2454 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,486 psi | 47% | 2362 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,709 psi | 59% | 2589 fps | 99% |
| Bofors RP15 | <<locked>> | 84% | 37,028 psi | 59% | 2536 fps | 95.2% |
| Bofors RP30 | <<locked>> | 92% | 39,639 psi | 64% | 2625 fps | 95.4% |
| Bofors RP5 | <<locked>> | 82% | 37,275 psi | 60% | 2539 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 49,110 psi | 79% | 2664 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 39,146 psi | 63% | 2572 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 47,993 psi | 77% | 2710 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 50,444 psi | 81% | 2723 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 86% | 45,136 psi | 72% | 2651 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 86% | 44,382 psi | 71% | 2635 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,177 psi | 68% | 2562 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 37,115 psi | 60% | 2615 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 47,500 psi | 76% | 2736 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,891 psi | 45% | 1565 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,440 psi | 71% | 2598 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,169 psi | 80% | 2687 fps | 99.4% |
| IMR 4831 | <<locked>> | 80% | 44,425 psi | 71% | 2615 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,918 psi | 70% | 2592 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 86% | 40,669 psi | 65% | 2621 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 48,254 psi | 77% | 2644 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 46,586 psi | 75% | 2635 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 30,850 psi | 49% | 2320 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 44,425 psi | 71% | 2635 fps | 97.2% |
| Norma 217 | <<locked>> | 96% | 35,288 psi | 57% | 2562 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 36,347 psi | 58% | 2549 fps | 96.6% |
| Norma URP | <<locked>> | 80% | 45,658 psi | 73% | 2654 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 40,553 psi | 65% | 2631 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 44,353 psi | 71% | 2648 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 36,289 psi | 58% | 2516 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,558 psi | 46% | 1604 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,398 psi | 74% | 2687 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,324 psi | 71% | 2700 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,895 psi | 54% | 2530 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 46,499 psi | 75% | 2799 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 40,161 psi | 64% | 2520 fps | 95% |
| Rottweil R 905 | <<locked>> | 80% | 38,232 psi | 61% | 2523 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 49,110 psi | 79% | 2664 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,254 psi | 77% | 2644 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 46,586 psi | 75% | 2635 fps | 99.2% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,166 psi | 76% | 2592 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,927 psi | 61% | 2520 fps | 95.7% |
| Somchem S361 | <<locked>> | 82% | 43,656 psi | 70% | 2569 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 42,641 psi | 68% | 2615 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,015 psi | 63% | 2513 fps | 97% |
| Vihtavuori N150 | <<locked>> | 80% | 51,010 psi | 82% | 2644 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,021 psi | 75% | 2648 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 36,143 psi | 58% | 2444 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 46,412 psi | 74% | 2651 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 37,956 psi | 61% | 2533 fps | 99.6% |
| Vihtavuori N560 | 52.4 gr | 86% | 44,715 psi | 72% | 2713 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 90% | 42,134 psi | 68% | 2651 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 98% | 47,659 psi | 76% | 2805 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,006 psi | 74% | 2608 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,269 psi | 77% | 2717 fps | 99.3% |
| Winchester StaBALL HD | 48.2 gr | 80% | 30,110 psi | 48% | 2474 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 82% | 38,116 psi | 61% | 2493 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 69 powders for 6.5 x 64 (Reb) loaded with the .264 | 140gr | Lapua Naturalis. Hodgdon Retumbo delivers the highest muzzle velocity at 2,979 fps; across all powders the maximum-charge window runs from 1,755 fps to 2,979 fps. ADI AR 2217 gives the best case fill at 100 %, and 69 of the 69 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 140.0 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. Winchester StaBALL HD, Vihtavuori N560, Accurate MAGPRO rank at the top here: for 6.5 x 64 (Reb) with the .264 | 140gr | Lapua Naturalis 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.