Load Specifications
Load data in caliber 6.5 x 64 (Reb) with .264 | 156gr | Berger LRBTHP bullet and 70 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>> | 92% | 54,027 psi | 87% | 2644 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,390 psi | 89% | 2671 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 52,779 psi | 85% | 2740 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 90% | 56,101 psi | 90% | 2730 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 92% | 53,766 psi | 86% | 2736 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,590 psi | 83% | 2700 fps | 99.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,282 psi | 74% | 2671 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 52,692 psi | 84% | 2671 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,666 psi | 89% | 2720 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 53,998 psi | 87% | 2733 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,361 psi | 89% | 2703 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 54,679 psi | 88% | 2766 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,796 psi | 89% | 2789 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,419 psi | 89% | 2703 fps | 97.1% |
| Bofors RP15 | <<locked>> | 94% | 53,214 psi | 85% | 2720 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,491 psi | 87% | 2769 fps | 99.5% |
| Bofors RP5 | <<locked>> | 92% | 53,998 psi | 87% | 2733 fps | 99.8% |
| Bofors RP7 | <<locked>> | 82% | 54,027 psi | 87% | 2621 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 98% | 53,345 psi | 86% | 2730 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 82% | 53,359 psi | 86% | 2671 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,898 psi | 90% | 2684 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 53,737 psi | 86% | 2680 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,231 psi | 90% | 2717 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 52,968 psi | 85% | 2598 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 53,519 psi | 86% | 2835 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 53,403 psi | 86% | 2703 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,304 psi | 60% | 1663 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,564 psi | 89% | 2661 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,332 psi | 89% | 2641 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 55,593 psi | 89% | 2661 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,752 psi | 88% | 2661 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 94% | 55,448 psi | 89% | 2772 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,785 psi | 67% | 2579 fps | 97.3% |
| Lovex S065 | <<locked>> | 84% | 56,202 psi | 90% | 2641 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,389 psi | 87% | 2638 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 55,303 psi | 89% | 2664 fps | 100% |
| Norma 204 | <<locked>> | 84% | 52,910 psi | 85% | 2661 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 42,061 psi | 67% | 2605 fps | 99.2% |
| Norma MRP | <<locked>> | 90% | 54,027 psi | 87% | 2756 fps | 100% |
| Norma URP | <<locked>> | 84% | 53,882 psi | 86% | 2654 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,434 psi | 90% | 2795 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 86% | 56,217 psi | 90% | 2713 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 54,505 psi | 87% | 2730 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,232 psi | 61% | 1706 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,274 psi | 89% | 2694 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 53,693 psi | 86% | 2720 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 53,998 psi | 87% | 2831 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,069 psi | 85% | 2792 fps | 98.5% |
| Rottweil R 904 | <<locked>> | 88% | 53,650 psi | 86% | 2648 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 90% | 55,245 psi | 89% | 2710 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 54,027 psi | 87% | 2621 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,202 psi | 90% | 2641 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,389 psi | 87% | 2638 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,085 psi | 88% | 2595 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,824 psi | 88% | 2707 fps | 99.8% |
| Somchem S361 | <<locked>> | 88% | 55,085 psi | 88% | 2648 fps | 98.8% |
| Somchem S365 | <<locked>> | 86% | 54,404 psi | 87% | 2657 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,796 psi | 89% | 2687 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 55,985 psi | 90% | 2582 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,477 psi | 89% | 2644 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,201 psi | 89% | 2667 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 54,752 psi | 88% | 2654 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,215 psi | 87% | 2680 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 53,795 psi | 86% | 2753 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 96% | 53,722 psi | 86% | 2736 fps | 99% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,070 psi | 87% | 2792 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,737 psi | 88% | 2605 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 53,359 psi | 86% | 2671 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 53,476 psi | 86% | 2785 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,579 psi | 89% | 2684 fps | 99.8% |
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% | 36,347 psi | 58% | 2343 fps | 98.7% |
| Accurate 4350 | <<locked>> | 80% | 48,457 psi | 78% | 2569 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 42,786 psi | 69% | 2562 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 40,205 psi | 64% | 2457 fps | 97.5% |
| ADI AR 2213 | <<locked>> | 82% | 38,551 psi | 62% | 2454 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 90% | 37,101 psi | 59% | 2421 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 86% | 29,414 psi | 47% | 2274 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,412 psi | 74% | 2572 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,335 psi | 65% | 2454 fps | 97.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,201 psi | 58% | 2402 fps | 96.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,969 psi | 56% | 2365 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,226 psi | 48% | 2287 fps | 97.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,479 psi | 62% | 2507 fps | 99.9% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 48,878 psi | 78% | 2592 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 33,721 psi | 54% | 2346 fps | 95.3% |
| Bofors RP30 | <<locked>> | 88% | 36,230 psi | 58% | 2438 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 36,201 psi | 58% | 2402 fps | 96.4% |
| Bofors RP7 | <<locked>> | 80% | 50,560 psi | 81% | 2566 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 86% | 35,578 psi | 57% | 2388 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 49,908 psi | 80% | 2615 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 52,373 psi | 84% | 2628 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 82% | 41,104 psi | 66% | 2457 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 82% | 40,393 psi | 65% | 2444 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,787 psi | 70% | 2464 fps | 100% |
| Hodgdon Retumbo | 48.9 gr | 84% | 33,765 psi | 54% | 2425 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 49,588 psi | 80% | 2644 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,978 psi | 45% | 1486 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,977 psi | 74% | 2507 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,866 psi | 83% | 2589 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 45,977 psi | 74% | 2516 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,943 psi | 64% | 2398 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 82% | 37,159 psi | 60% | 2431 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 96% | 36,811 psi | 59% | 2470 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 49,617 psi | 80% | 2543 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,993 psi | 77% | 2539 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 31,401 psi | 50% | 2231 fps | 97.2% |
| Norma 204 | <<locked>> | 80% | 46,224 psi | 74% | 2549 fps | 98.6% |
| Norma 217 | <<locked>> | 90% | 30,211 psi | 48% | 2323 fps | 95% |
| Norma MRP | <<locked>> | 80% | 37,898 psi | 61% | 2467 fps | 98.3% |
| Norma URP | <<locked>> | 80% | 47,369 psi | 76% | 2556 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 36,637 psi | 59% | 2434 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 46,122 psi | 74% | 2556 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 32,706 psi | 52% | 2326 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,645 psi | 46% | 1522 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,312 psi | 77% | 2589 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,456 psi | 74% | 2608 fps | 100% |
| ReloadSwiss RS 76 | 51.1 gr | 82% | 30,618 psi | 49% | 2339 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 42,250 psi | 68% | 2598 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 41,524 psi | 67% | 2438 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 80% | 39,639 psi | 64% | 2441 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 80% | 50,560 psi | 81% | 2566 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,617 psi | 80% | 2543 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,993 psi | 77% | 2539 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,530 psi | 78% | 2497 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,305 psi | 63% | 2434 fps | 97.4% |
| Somchem S361 | <<locked>> | 80% | 42,221 psi | 68% | 2431 fps | 96.2% |
| Somchem S365 | <<locked>> | 80% | 44,411 psi | 71% | 2513 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,263 psi | 65% | 2425 fps | 98.4% |
| Vihtavuori N150 | <<locked>> | 80% | 52,663 psi | 84% | 2536 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,747 psi | 78% | 2549 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,969 psi | 56% | 2310 fps | 96.6% |
| Vihtavuori N550 | <<locked>> | 80% | 48,051 psi | 77% | 2552 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,189 psi | 63% | 2438 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 37,985 psi | 61% | 2457 fps | 95% |
| Vihtavuori N565 | <<locked>> | 86% | 38,290 psi | 61% | 2454 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 94% | 43,845 psi | 70% | 2615 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,747 psi | 77% | 2510 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,212 psi | 81% | 2621 fps | 99.9% |
| Winchester StaBALL HD | 47.8 gr | 80% | 31,111 psi | 50% | 2395 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,898 psi | 59% | 2359 fps | 96.6% |
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 70 powders for 6.5 x 64 (Reb) loaded with the .264 | 156gr | Berger LRBTHP. Hodgdon Retumbo delivers the highest muzzle velocity at 2,835 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,835 fps. ADI AR 2217 gives the best case fill at 100 %, and 70 of the 70 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 156.0 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, Bofors RP30 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 | 156gr | Berger LRBTHP 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.