Load Specifications
Load data in caliber 6.5 x 64 (Reb) with .263 | 139gr | Prvi Partizan FMJ BT bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Norma MRP and Vihtavuori N560.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 54,172 psi | 87% | 2799 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,521 psi | 89% | 2831 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 55,579 psi | 89% | 2943 fps | 98.8% |
| Accurate MAGPRO | <<locked>> | 94% | 56,391 psi | 90% | 2943 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 92% | 56,289 psi | 90% | 2884 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 94% | 54,027 psi | 87% | 2887 fps | 98.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,298 psi | 77% | 2782 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,091 psi | 69% | 2743 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 52,953 psi | 85% | 2825 fps | 99% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 52,953 psi | 85% | 2825 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,304 psi | 90% | 2884 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 53,693 psi | 86% | 2841 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,825 psi | 90% | 2874 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 53,969 psi | 87% | 2884 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,984 psi | 88% | 2858 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,186 psi | 87% | 2913 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,419 psi | 89% | 2946 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 55,956 psi | 90% | 2848 fps | 95.9% |
| Bofors RP15 | <<locked>> | 96% | 52,895 psi | 85% | 2864 fps | 99% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,473 psi | 81% | 2854 fps | 98.3% |
| Bofors RP5 | <<locked>> | 94% | 53,969 psi | 87% | 2884 fps | 99.3% |
| Bofors RP7 | <<locked>> | 84% | 54,520 psi | 87% | 2779 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,171 psi | 85% | 2867 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 84% | 53,534 psi | 86% | 2828 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 84% | 56,405 psi | 90% | 2841 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 92% | 53,838 psi | 86% | 2825 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 52,939 psi | 85% | 2812 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 53,171 psi | 85% | 2759 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,272 psi | 85% | 2982 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 84% | 53,867 psi | 86% | 2864 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,144 psi | 60% | 1768 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,927 psi | 90% | 2815 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,840 psi | 90% | 2799 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 55,970 psi | 90% | 2825 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,158 psi | 88% | 2812 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 96% | 55,448 psi | 89% | 2923 fps | 98.7% |
| Lovex S065 | <<locked>> | 84% | 53,084 psi | 85% | 2746 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,824 psi | 88% | 2795 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,129 psi | 88% | 2812 fps | 100% |
| Norma 204 | <<locked>> | 86% | 53,330 psi | 86% | 2815 fps | 98.9% |
| Norma 217ᴾ | <<locked>> | 100% | 38,537 psi | 62% | 2664 fps | 97.2% |
| Norma MRP | <<locked>> | 92% | 53,766 psi | 86% | 2907 fps | 99.8% |
| Norma URP | <<locked>> | 86% | 54,157 psi | 87% | 2815 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,391 psi | 90% | 2946 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 88% | 56,391 psi | 90% | 2871 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,433 psi | 87% | 2877 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,000 psi | 61% | 1811 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,622 psi | 89% | 2854 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 53,853 psi | 86% | 2881 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,853 psi | 86% | 2982 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,689 psi | 78% | 2861 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 82% | 55,767 psi | 89% | 2779 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 53,882 psi | 86% | 2799 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 92% | 55,361 psi | 89% | 2864 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 84% | 54,520 psi | 87% | 2779 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 53,084 psi | 85% | 2746 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,824 psi | 88% | 2795 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,738 psi | 89% | 2654 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,724 psi | 89% | 2753 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,926 psi | 88% | 2858 fps | 99.3% |
| Somchem S355 | <<locked>> | 82% | 55,521 psi | 89% | 2772 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,492 psi | 89% | 2792 fps | 97.9% |
| Somchem S365 | <<locked>> | 88% | 54,259 psi | 87% | 2815 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,854 psi | 90% | 2838 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 53,171 psi | 85% | 2697 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,753 psi | 89% | 2805 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,405 psi | 89% | 2818 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 86% | 54,882 psi | 88% | 2808 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 53,838 psi | 86% | 2835 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 53,679 psi | 86% | 2900 fps | 97.9% |
| Vihtavuori N565 | <<locked>> | 98% | 53,214 psi | 85% | 2874 fps | 98.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,009 psi | 80% | 2867 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,172 psi | 88% | 2766 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 53,824 psi | 86% | 2831 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 52,228 psi | 84% | 2933 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,840 psi | 90% | 2835 fps | 99.3% |
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% | 33,707 psi | 54% | 2415 fps | 96.9% |
| Accurate 4350 | <<locked>> | 80% | 45,223 psi | 73% | 2664 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 42,018 psi | 67% | 2694 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 88% | 45,629 psi | 73% | 2753 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 37,840 psi | 61% | 2539 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 86% | 41,307 psi | 66% | 2644 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 96% | 42,192 psi | 68% | 2657 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 92% | 33,301 psi | 53% | 2500 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,101 psi | 61% | 2539 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,101 psi | 61% | 2539 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,410 psi | 70% | 2674 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,169 psi | 80% | 2789 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,753 psi | 61% | 2533 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 84% | 38,609 psi | 62% | 2592 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,401 psi | 52% | 2444 fps | 99.4% |
| Alliant Reloder-25 | <<locked>> | 82% | 30,240 psi | 48% | 2405 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,302 psi | 57% | 2572 fps | 98.7% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 52,504 psi | 84% | 2792 fps | 95.1% |
| Bofors RP15 | <<locked>> | 86% | 38,363 psi | 62% | 2585 fps | 95.6% |
| Bofors RP30 | <<locked>> | 94% | 41,075 psi | 66% | 2677 fps | 95.9% |
| Bofors RP5 | <<locked>> | 84% | 38,609 psi | 62% | 2592 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 48,167 psi | 77% | 2671 fps | 99% |
| Hodgdon H1000 | <<locked>> | 92% | 40,538 psi | 65% | 2628 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 47,007 psi | 75% | 2717 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 80% | 49,632 psi | 80% | 2733 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 86% | 44,048 psi | 71% | 2648 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,323 psi | 69% | 2635 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,002 psi | 66% | 2559 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 35,824 psi | 57% | 2602 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 46,354 psi | 74% | 2736 fps | 98.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,862 psi | 45% | 1581 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,598 psi | 70% | 2605 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,487 psi | 79% | 2694 fps | 99.4% |
| IMR 4831 | <<locked>> | 80% | 43,062 psi | 69% | 2612 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,033 psi | 69% | 2595 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 88% | 42,293 psi | 68% | 2677 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 47,021 psi | 75% | 2644 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 45,281 psi | 73% | 2635 fps | 99% |
| Lovex S071 | <<locked>> | 82% | 31,111 psi | 50% | 2346 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 43,511 psi | 70% | 2638 fps | 97% |
| Norma 217 | <<locked>> | 96% | 33,866 psi | 54% | 2546 fps | 95.2% |
| Norma MRP | 49.7 gr | 80% | 35,114 psi | 56% | 2536 fps | 96.1% |
| Norma URP | <<locked>> | 80% | 44,425 psi | 71% | 2654 fps | 99.9% |
| Ramshot Grand | <<locked>> | 88% | 42,090 psi | 67% | 2687 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 43,308 psi | 69% | 2648 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 86% | 35,085 psi | 56% | 2507 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,471 psi | 46% | 1617 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,179 psi | 72% | 2687 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,294 psi | 69% | 2700 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 35,027 psi | 56% | 2579 fps | 96.3% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 45,121 psi | 72% | 2792 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 52,257 psi | 84% | 2726 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 41,742 psi | 67% | 2575 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 37,173 psi | 60% | 2520 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 48,167 psi | 77% | 2671 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,021 psi | 75% | 2644 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 45,281 psi | 73% | 2635 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,518 psi | 84% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,905 psi | 74% | 2592 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,854 psi | 59% | 2516 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 52,083 psi | 84% | 2723 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 45,542 psi | 73% | 2625 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 41,495 psi | 67% | 2615 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,797 psi | 61% | 2507 fps | 96.6% |
| Vihtavuori N150 | <<locked>> | 80% | 49,821 psi | 80% | 2648 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,803 psi | 73% | 2648 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 34,824 psi | 56% | 2434 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 45,310 psi | 73% | 2654 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 36,361 psi | 58% | 2516 fps | 99.3% |
| Vihtavuori N560 | 53.4 gr | 86% | 43,468 psi | 70% | 2710 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 92% | 43,584 psi | 70% | 2697 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 98% | 46,485 psi | 75% | 2802 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,005 psi | 72% | 2612 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,007 psi | 75% | 2717 fps | 99.2% |
| Winchester StaBALL HD | 49.2 gr | 80% | 28,790 psi | 46% | 2451 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 82% | 36,753 psi | 59% | 2484 fps | 95.1% |
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 (Reb) loaded with the .263 | 139gr | Prvi Partizan FMJ BT. Hodgdon Retumbo delivers the highest muzzle velocity at 2,982 fps; across all powders the maximum-charge window runs from 1,768 fps to 2,982 fps. ADI AR 2217 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 60–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.263" 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. Winchester StaBALL HD, Norma MRP, Vihtavuori N560 rank at the top here: for 6.5 x 64 (Reb) with the .263 | 139gr | Prvi Partizan FMJ BT 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.