Load Specifications
Load data in caliber 6.5 x 64 (Reb) with .264 | 144gr | Lapua FMJ Boat Tail bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Ramshot Grand and Alliant Reloder-26.
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% | 55,521 psi | 89% | 2772 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 53,287 psi | 85% | 2749 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 53,853 psi | 86% | 2858 fps | 97.8% |
| ADI AR 2209 | <<locked>> | 90% | 53,809 psi | 86% | 2802 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 94% | 55,288 psi | 89% | 2864 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,516 psi | 79% | 2762 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,266 psi | 71% | 2726 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,041 psi | 87% | 2802 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,201 psi | 89% | 2815 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 53,461 psi | 86% | 2792 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,288 psi | 89% | 2861 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,434 psi | 90% | 2828 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,680 psi | 89% | 2890 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 52,910 psi | 85% | 2861 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,505 psi | 86% | 2769 fps | 95.8% |
| Bofors RP15 | <<locked>> | 96% | 54,476 psi | 87% | 2844 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,663 psi | 83% | 2831 fps | 98.8% |
| Bofors RP5 | <<locked>> | 94% | 55,288 psi | 89% | 2861 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 55,390 psi | 89% | 2746 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,549 psi | 87% | 2848 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 84% | 54,926 psi | 88% | 2802 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 53,867 psi | 86% | 2759 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 92% | 55,376 psi | 89% | 2805 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,099 psi | 87% | 2785 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,317 psi | 87% | 2730 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,766 psi | 88% | 2963 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 55,172 psi | 88% | 2838 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,246 psi | 60% | 1739 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 53,737 psi | 86% | 2736 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 53,534 psi | 86% | 2720 fps | 99.8% |
| IMR 4831 | <<locked>> | 86% | 53,548 psi | 86% | 2743 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,217 psi | 90% | 2785 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 94% | 53,084 psi | 85% | 2838 fps | 98.6% |
| Lovex S065 | <<locked>> | 84% | 54,259 psi | 87% | 2720 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,811 psi | 89% | 2766 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 53,055 psi | 85% | 2736 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,418 psi | 87% | 2789 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 39,726 psi | 64% | 2651 fps | 98% |
| Norma MRP | <<locked>> | 92% | 55,201 psi | 89% | 2881 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,245 psi | 89% | 2785 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 53,650 psi | 86% | 2861 fps | 99% |
| Ramshot Hunter | <<locked>> | 86% | 53,998 psi | 87% | 2789 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 56,086 psi | 90% | 2858 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,869 psi | 61% | 1778 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 52,997 psi | 85% | 2769 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,172 psi | 88% | 2854 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,550 psi | 89% | 2963 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,328 psi | 81% | 2848 fps | 97.3% |
| Rottweil R 904 | <<locked>> | 90% | 55,230 psi | 89% | 2776 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 90% | 52,953 psi | 85% | 2782 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 55,390 psi | 89% | 2746 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,259 psi | 87% | 2720 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,811 psi | 89% | 2766 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 53,417 psi | 86% | 2674 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,173 psi | 90% | 2835 fps | 99.6% |
| Somchem S361 | <<locked>> | 88% | 52,910 psi | 85% | 2710 fps | 97.8% |
| Somchem S365 | <<locked>> | 88% | 55,854 psi | 90% | 2789 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 53,505 psi | 86% | 2756 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 54,346 psi | 87% | 2667 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 53,548 psi | 86% | 2726 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 53,055 psi | 85% | 2740 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 56,275 psi | 90% | 2785 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,100 psi | 88% | 2805 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,042 psi | 88% | 2877 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 98% | 54,636 psi | 88% | 2854 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,285 psi | 82% | 2848 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,376 psi | 90% | 2733 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,926 psi | 88% | 2802 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,070 psi | 87% | 2907 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 53,403 psi | 86% | 2753 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% | 34,708 psi | 56% | 2398 fps | 97.6% |
| Accurate 4350 | <<locked>> | 80% | 46,456 psi | 74% | 2641 fps | 100% |
| Accurate MAGPRO | 54.2 gr | 86% | 43,816 psi | 70% | 2677 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 38,595 psi | 62% | 2516 fps | 96.2% |
| ADI AR 2213 | <<locked>> | 86% | 42,192 psi | 68% | 2625 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 94% | 40,654 psi | 65% | 2589 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 90% | 32,010 psi | 51% | 2428 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,556 psi | 71% | 2648 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,285 psi | 82% | 2759 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,725 psi | 62% | 2516 fps | 96.2% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,985 psi | 59% | 2513 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,373 psi | 54% | 2428 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,950 psi | 46% | 2333 fps | 95.9% |
| Alliant Reloder-26 | 51 gr | 80% | 36,506 psi | 59% | 2562 fps | 99.2% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,430 psi | 81% | 2713 fps | 95% |
| Bofors RP15 | <<locked>> | 84% | 36,709 psi | 59% | 2507 fps | 95.5% |
| Bofors RP30 | <<locked>> | 92% | 39,450 psi | 63% | 2602 fps | 95.8% |
| Bofors RP5 | <<locked>> | 82% | 36,985 psi | 59% | 2513 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 48,979 psi | 79% | 2641 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 90% | 38,783 psi | 62% | 2549 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 47,935 psi | 77% | 2687 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 50,502 psi | 81% | 2703 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 42,076 psi | 67% | 2569 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,394 psi | 66% | 2556 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,119 psi | 68% | 2536 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,374 psi | 55% | 2523 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 47,471 psi | 76% | 2713 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,905 psi | 45% | 1552 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,382 psi | 71% | 2575 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,270 psi | 81% | 2664 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 44,193 psi | 71% | 2592 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,104 psi | 66% | 2516 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 86% | 40,669 psi | 65% | 2605 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 48,037 psi | 77% | 2618 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 46,325 psi | 74% | 2612 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 29,878 psi | 48% | 2277 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 44,367 psi | 71% | 2612 fps | 97.6% |
| Norma 217 | <<locked>> | 94% | 32,576 psi | 52% | 2474 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 36,201 psi | 58% | 2523 fps | 97% |
| Norma URP | <<locked>> | 80% | 45,542 psi | 73% | 2631 fps | 100% |
| Ramshot Grand | 52.7 gr | 86% | 40,277 psi | 65% | 2608 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 44,222 psi | 71% | 2625 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 33,446 psi | 54% | 2428 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,529 psi | 46% | 1591 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,412 psi | 74% | 2664 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,498 psi | 71% | 2680 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,475 psi | 54% | 2500 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 43,192 psi | 69% | 2710 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 40,001 psi | 64% | 2500 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 80% | 38,000 psi | 61% | 2500 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 80% | 48,979 psi | 79% | 2641 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,037 psi | 77% | 2618 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 46,325 psi | 74% | 2612 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,920 psi | 75% | 2569 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,666 psi | 60% | 2493 fps | 96.1% |
| Somchem S361 | <<locked>> | 82% | 43,381 psi | 70% | 2543 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 42,453 psi | 68% | 2585 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,624 psi | 62% | 2484 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 80% | 50,937 psi | 82% | 2618 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,920 psi | 75% | 2621 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,489 psi | 54% | 2362 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 46,195 psi | 74% | 2625 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,449 psi | 60% | 2500 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 84% | 41,655 psi | 67% | 2631 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 90% | 41,872 psi | 67% | 2621 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 96% | 44,715 psi | 72% | 2726 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,934 psi | 74% | 2585 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,196 psi | 77% | 2694 fps | 99.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,515 psi | 47% | 2441 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,273 psi | 57% | 2411 fps | 95% |
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 | 144gr | Lapua FMJ Boat Tail. Hodgdon Retumbo delivers the highest muzzle velocity at 2,963 fps; across all powders the maximum-charge window runs from 1,739 fps to 2,963 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 144.0 gr projectile in 0.264" calls for a 1:9.5 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. Accurate MAGPRO, Ramshot Grand, Alliant Reloder-26 rank at the top here: for 6.5 x 64 (Reb) with the .264 | 144gr | Lapua FMJ Boat Tail 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.