Load Specifications
Load data in caliber 6.5 x 57 R with .264 | 128gr | Hasler Hunting bullet and 36 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and Vihtavuori N555.
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>> | 96% | 42,221 psi | 88% | 2638 fps | 97.2% |
| Accurate 4350 | <<locked>> | 86% | 41,423 psi | 87% | 2641 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 42,859 psi | 90% | 2700 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 84% | 42,902 psi | 90% | 2720 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 42,656 psi | 89% | 2717 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,972 psi | 84% | 2677 fps | 97.2% |
| Alliant Reloder-26 | <<locked>> | 94% | 41,742 psi | 87% | 2766 fps | 98.5% |
| Bofors RP7 | <<locked>> | 84% | 43,265 psi | 90% | 2598 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 82% | 41,437 psi | 87% | 2641 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 42,714 psi | 89% | 2641 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,998 psi | 75% | 1736 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,134 psi | 88% | 2575 fps | 95.9% |
| IMR 4831 | <<locked>> | 92% | 43,265 psi | 90% | 2661 fps | 98.9% |
| Lovex S065 | <<locked>> | 84% | 42,119 psi | 88% | 2582 fps | 97.4% |
| Lovex S070 | <<locked>> | 86% | 42,699 psi | 89% | 2612 fps | 96.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,234 psi | 84% | 2598 fps | 96.7% |
| Norma URP | <<locked>> | 86% | 41,046 psi | 86% | 2631 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 88% | 42,743 psi | 89% | 2677 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,535 psi | 76% | 1775 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 42,699 psi | 89% | 2720 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 41,089 psi | 86% | 2657 fps | 98.2% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 43,178 psi | 90% | 2730 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 82% | 43,308 psi | 90% | 2625 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 43,265 psi | 90% | 2598 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 42,119 psi | 88% | 2582 fps | 97.4% |
| Shooters World SW4350 | <<locked>> | 86% | 42,699 psi | 89% | 2612 fps | 96.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,466 psi | 87% | 2526 fps | 95.9% |
| Somchem S365 | <<locked>> | 90% | 42,351 psi | 88% | 2694 fps | 100% |
| Unknown powder | <<locked>> | 84% | 41,640 psi | 87% | 2635 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 86% | 42,351 psi | 88% | 2572 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 41,916 psi | 88% | 2612 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 84% | 42,308 psi | 88% | 2651 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 94% | 41,785 psi | 87% | 2687 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 42,250 psi | 88% | 2605 fps | 99.8% |
| Winchester 760 | <<locked>> | 82% | 41,437 psi | 87% | 2641 fps | 96% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,060 psi | 86% | 2808 fps | 100% |
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>> | 92% | 36,767 psi | 77% | 2526 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 33,518 psi | 70% | 2464 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,330 psi | 70% | 2477 fps | 96.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,536 psi | 78% | 2608 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,514 psi | 57% | 2339 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,172 psi | 73% | 2559 fps | 95.3% |
| Alliant Reloder-26 | 46.4 gr | 88% | 33,692 psi | 70% | 2569 fps | 95.7% |
| Bofors RP7 | <<locked>> | 82% | 40,799 psi | 85% | 2546 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 38,769 psi | 81% | 2582 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,951 psi | 65% | 2382 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,861 psi | 56% | 1549 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,755 psi | 83% | 2526 fps | 95.2% |
| IMR 4831 | <<locked>> | 82% | 31,488 psi | 66% | 2398 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 37,231 psi | 78% | 2477 fps | 96% |
| Lovex S070 | <<locked>> | 84% | 40,306 psi | 84% | 2562 fps | 95.8% |
| Lovex S071 | <<locked>> | 96% | 35,230 psi | 74% | 2490 fps | 95% |
| Norma URP | <<locked>> | 80% | 33,707 psi | 70% | 2467 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 84% | 37,289 psi | 78% | 2559 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,427 psi | 57% | 1588 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,943 psi | 83% | 2667 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,272 psi | 70% | 2484 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 35,056 psi | 73% | 2539 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 40,437 psi | 84% | 2569 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 82% | 40,799 psi | 85% | 2546 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,231 psi | 78% | 2477 fps | 96% |
| Shooters World SW4350 | <<locked>> | 84% | 40,306 psi | 84% | 2562 fps | 95.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,827 psi | 81% | 2474 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 30,269 psi | 63% | 2421 fps | 98.3% |
| Unknown powder | <<locked>> | 80% | 36,376 psi | 76% | 2520 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 80% | 35,070 psi | 73% | 2425 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 36,637 psi | 77% | 2500 fps | 97.1% |
| Vihtavuori N550 | <<locked>> | 80% | 37,086 psi | 77% | 2539 fps | 97.1% |
| Vihtavuori N555 | 40.4 gr | 84% | 29,979 psi | 63% | 2415 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,461 psi | 72% | 2441 fps | 98.5% |
| Winchester 760 | <<locked>> | 80% | 38,769 psi | 81% | 2582 fps | 95.1% |
| Winchester StaBALL HD | 44.6 gr | 88% | 27,688 psi | 58% | 2425 fps | 96.1% |
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 63 powders for 6.5 x 57 R loaded with the .264 | 128gr | Hasler Hunting. Winchester StaBALL HD delivers the highest muzzle velocity at 2,808 fps; across all powders the maximum-charge window runs from 1,736 fps to 2,808 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 63 of the 63 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 75–90 %, leaving at least 10 % headroom. The 128.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Hodgdon Retumbo, Hodgdon TrailBoss 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. Alliant Reloder-26, Winchester StaBALL HD, Vihtavuori N555 rank at the top here: for 6.5 x 57 R with the .264 | 128gr | Hasler Hunting they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.