Load Specifications
Load data in caliber 6.5 x 64 (Reb) with .264 | 159gr | RWS TMR bullet and 67 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Winchester StaBALL HD.
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>> | 90% | 54,041 psi | 87% | 2628 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,766 psi | 88% | 2644 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 56,347 psi | 90% | 2776 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 88% | 55,695 psi | 89% | 2710 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 53,650 psi | 86% | 2720 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,071 psi | 88% | 2743 fps | 99.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,559 psi | 79% | 2707 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,869 psi | 90% | 2694 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 55,288 psi | 89% | 2700 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 90% | 54,027 psi | 87% | 2717 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 55,506 psi | 89% | 2680 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 54,998 psi | 88% | 2746 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,666 psi | 89% | 2762 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 51,895 psi | 83% | 2766 fps | 96.8% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 54,665 psi | 88% | 2684 fps | 97.5% |
| Bofors RP15 | <<locked>> | 92% | 53,258 psi | 85% | 2703 fps | 99.8% |
| Bofors RP30 | <<locked>> | 98% | 54,679 psi | 88% | 2756 fps | 99.7% |
| Bofors RP5 | <<locked>> | 90% | 54,027 psi | 87% | 2717 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 56,391 psi | 90% | 2641 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 53,214 psi | 85% | 2713 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 56,217 psi | 90% | 2694 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 53,258 psi | 85% | 2657 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,927 psi | 90% | 2697 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,217 psi | 90% | 2625 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 53,853 psi | 86% | 2822 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,434 psi | 60% | 1667 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 54,969 psi | 88% | 2638 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 55,158 psi | 88% | 2638 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 54,157 psi | 87% | 2641 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 92% | 55,347 psi | 89% | 2753 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,252 psi | 73% | 2625 fps | 98.5% |
| Lovex S065 | <<locked>> | 82% | 55,376 psi | 89% | 2615 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 53,635 psi | 86% | 2612 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 55,245 psi | 89% | 2644 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,840 psi | 90% | 2690 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 45,759 psi | 73% | 2651 fps | 99.8% |
| Norma MRP | <<locked>> | 88% | 53,824 psi | 86% | 2730 fps | 100% |
| Norma URP | <<locked>> | 82% | 53,301 psi | 85% | 2628 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,333 psi | 90% | 2776 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 84% | 55,637 psi | 89% | 2687 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 54,520 psi | 87% | 2710 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,363 psi | 62% | 1706 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,868 psi | 88% | 2667 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 53,330 psi | 86% | 2694 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 54,288 psi | 87% | 2815 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 53,403 psi | 86% | 2776 fps | 98.9% |
| Rottweil R 904 | <<locked>> | 86% | 52,982 psi | 85% | 2625 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 88% | 54,955 psi | 88% | 2690 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 56,391 psi | 90% | 2641 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,376 psi | 89% | 2615 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 53,635 psi | 86% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 54,331 psi | 87% | 2572 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 54,549 psi | 87% | 2687 fps | 99.9% |
| Somchem S361 | <<locked>> | 86% | 54,143 psi | 87% | 2621 fps | 99% |
| Somchem S365 | <<locked>> | 84% | 54,230 psi | 87% | 2635 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 55,100 psi | 88% | 2661 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 54,723 psi | 88% | 2618 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 54,969 psi | 88% | 2648 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 54,012 psi | 87% | 2625 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 53,983 psi | 87% | 2657 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 53,534 psi | 86% | 2730 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 94% | 53,635 psi | 86% | 2717 fps | 99.2% |
| Vihtavuori N568 | <<locked>> | 98% | 54,433 psi | 87% | 2779 fps | 98.6% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 55,201 psi | 89% | 2831 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,041 psi | 87% | 2579 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 54,041 psi | 87% | 2762 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,911 psi | 88% | 2657 fps | 99.9% |
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% | 38,624 psi | 62% | 2372 fps | 99.4% |
| Accurate 4350 | <<locked>> | 80% | 51,227 psi | 82% | 2592 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 39,740 psi | 64% | 2480 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 42,728 psi | 69% | 2493 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 80% | 38,232 psi | 61% | 2431 fps | 96.1% |
| ADI AR 2217 | <<locked>> | 88% | 37,043 psi | 59% | 2408 fps | 96% |
| ADI AR 2225 | <<locked>> | 84% | 29,428 psi | 47% | 2264 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,211 psi | 79% | 2598 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,598 psi | 68% | 2484 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,696 psi | 62% | 2441 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,420 psi | 60% | 2395 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,329 psi | 52% | 2326 fps | 98.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,597 psi | 67% | 2543 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 48,225 psi | 77% | 2700 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 45,469 psi | 73% | 2520 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 35,940 psi | 58% | 2379 fps | 96.6% |
| Bofors RP30 | <<locked>> | 84% | 34,171 psi | 55% | 2369 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 38,696 psi | 62% | 2441 fps | 97.6% |
| Bofors RP7 | <<locked>> | 80% | 53,229 psi | 85% | 2595 fps | 100% |
| Hodgdon H1000 | <<locked>> | 84% | 35,172 psi | 56% | 2369 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 52,721 psi | 85% | 2644 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 40,712 psi | 65% | 2434 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,045 psi | 64% | 2421 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,398 psi | 74% | 2487 fps | 100% |
| Hodgdon Retumbo | 48.5 gr | 80% | 31,531 psi | 51% | 2346 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,239 psi | 45% | 1490 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,515 psi | 78% | 2536 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 48,515 psi | 78% | 2539 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,192 psi | 68% | 2431 fps | 96.8% |
| IMR 7828 SSC | <<locked>> | 80% | 36,985 psi | 59% | 2415 fps | 95.7% |
| IMR 8133 Enduron | <<locked>> | 92% | 34,737 psi | 56% | 2405 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 52,011 psi | 83% | 2566 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,372 psi | 81% | 2562 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,388 psi | 54% | 2260 fps | 98.2% |
| Norma 204 | <<locked>> | 80% | 48,805 psi | 78% | 2579 fps | 99.3% |
| Norma 217 | <<locked>> | 88% | 30,545 psi | 49% | 2316 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 40,567 psi | 65% | 2503 fps | 99.1% |
| Norma URP | <<locked>> | 80% | 49,951 psi | 80% | 2579 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,463 psi | 58% | 2418 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 48,776 psi | 78% | 2582 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,576 psi | 52% | 2306 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,906 psi | 46% | 1526 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,198 psi | 82% | 2615 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,588 psi | 80% | 2638 fps | 100% |
| ReloadSwiss RS 76 | 51.9 gr | 80% | 30,472 psi | 49% | 2320 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 39,624 psi | 64% | 2526 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 43,947 psi | 70% | 2470 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 80% | 42,250 psi | 68% | 2477 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 80% | 53,229 psi | 85% | 2595 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,011 psi | 83% | 2566 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,372 psi | 81% | 2562 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,749 psi | 81% | 2520 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,916 psi | 67% | 2474 fps | 98.4% |
| Somchem S361 | <<locked>> | 80% | 44,585 psi | 71% | 2461 fps | 97.2% |
| Somchem S365 | <<locked>> | 80% | 47,500 psi | 76% | 2539 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,757 psi | 69% | 2457 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 80% | 51,300 psi | 82% | 2569 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,057 psi | 59% | 2339 fps | 97.6% |
| Vihtavuori N550 | <<locked>> | 80% | 50,720 psi | 81% | 2575 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,785 psi | 67% | 2464 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,509 psi | 65% | 2493 fps | 96.3% |
| Vihtavuori N565 | <<locked>> | 84% | 38,334 psi | 61% | 2438 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 90% | 40,944 psi | 66% | 2536 fps | 95.3% |
| Vihtavuori N570 | <<locked>> | 96% | 47,921 psi | 77% | 2707 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,459 psi | 81% | 2530 fps | 100% |
| Winchester StaBALL HD | 49.8 gr | 80% | 34,185 psi | 55% | 2434 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,001 psi | 63% | 2388 fps | 97.6% |
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 67 powders for 6.5 x 64 (Reb) loaded with the .264 | 159gr | RWS TMR. Vihtavuori N570 delivers the highest muzzle velocity at 2,831 fps; across all powders the maximum-charge window runs from 1,667 fps to 2,831 fps. ADI AR 2217 gives the best case fill at 100 %, and 67 of the 67 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 159.0 gr projectile in 0.264" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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. Hodgdon Retumbo, ReloadSwiss RS 76, Winchester StaBALL HD rank at the top here: for 6.5 x 64 (Reb) with the .264 | 159gr | RWS TMR 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.