Load Specifications
Load data in caliber 6.5 x 57 R with .264 | 125gr | SUS-TAC HPT 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, ReloadSwiss RS 70 and Alliant Reloder-16.
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% | 40,785 psi | 85% | 2635 fps | 96.5% |
| Accurate 4350 | <<locked>> | 88% | 42,917 psi | 90% | 2697 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 41,829 psi | 87% | 2703 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 41,539 psi | 87% | 2720 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 41,307 psi | 86% | 2717 fps | 99.6% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,827 psi | 81% | 2674 fps | 96.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 43,250 psi | 90% | 2822 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 84% | 43,221 psi | 90% | 2703 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 41,278 psi | 86% | 2641 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,013 psi | 75% | 1752 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 43,207 psi | 90% | 2595 fps | 96% |
| IMR 4831 | <<locked>> | 92% | 41,872 psi | 87% | 2661 fps | 98.4% |
| Lovex S065 | <<locked>> | 84% | 40,872 psi | 85% | 2582 fps | 96.8% |
| Lovex S070 | <<locked>> | 86% | 41,727 psi | 87% | 2615 fps | 95.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,841 psi | 81% | 2595 fps | 95.9% |
| Norma URP | <<locked>> | 88% | 42,511 psi | 89% | 2687 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 88% | 41,452 psi | 87% | 2677 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,535 psi | 76% | 1791 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 41,321 psi | 86% | 2723 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 42,467 psi | 89% | 2710 fps | 98.2% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 41,945 psi | 88% | 2726 fps | 97.8% |
| Rottweil R 903 | <<locked>> | 82% | 41,916 psi | 88% | 2628 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 40,872 psi | 85% | 2582 fps | 96.8% |
| Shooters World SW4350 | <<locked>> | 86% | 41,727 psi | 87% | 2615 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 43,192 psi | 90% | 2684 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 43,076 psi | 90% | 2582 fps | 96% |
| Somchem S355 | <<locked>> | 82% | 42,540 psi | 89% | 2628 fps | 99.5% |
| Somchem S365 | <<locked>> | 90% | 40,857 psi | 85% | 2697 fps | 100% |
| Unknown powder | <<locked>> | 86% | 43,149 psi | 90% | 2690 fps | 98% |
| Vihtavuori N150 | <<locked>> | 86% | 41,075 psi | 86% | 2575 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 84% | 40,596 psi | 85% | 2612 fps | 97.9% |
| Vihtavuori N550 | <<locked>> | 84% | 41,002 psi | 86% | 2651 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 96% | 43,149 psi | 90% | 2743 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 41,060 psi | 86% | 2608 fps | 99.5% |
| Winchester 760 | <<locked>> | 84% | 43,221 psi | 90% | 2703 fps | 96.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,552 psi | 83% | 2799 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>> | 94% | 38,029 psi | 79% | 2579 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 32,518 psi | 68% | 2467 fps | 95.5% |
| Alliant Reloder-16 | 37.9 gr | 80% | 32,503 psi | 68% | 2480 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,361 psi | 76% | 2605 fps | 98.6% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,427 psi | 59% | 2388 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,419 psi | 76% | 2612 fps | 95.4% |
| Alliant Reloder-26 | 47 gr | 90% | 34,867 psi | 73% | 2625 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 82% | 40,422 psi | 84% | 2644 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,892 psi | 62% | 2379 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,803 psi | 56% | 1565 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,466 psi | 85% | 2539 fps | 95.2% |
| IMR 4831 | <<locked>> | 84% | 32,518 psi | 68% | 2451 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 36,143 psi | 76% | 2477 fps | 95.3% |
| Lovex S070 | <<locked>> | 84% | 39,117 psi | 82% | 2562 fps | 95% |
| Lovex S071 | <<locked>> | 98% | 36,434 psi | 76% | 2543 fps | 95% |
| Norma URP | <<locked>> | 80% | 32,764 psi | 68% | 2470 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 86% | 38,812 psi | 81% | 2618 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,340 psi | 57% | 1604 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,653 psi | 81% | 2667 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,577 psi | 72% | 2539 fps | 95.9% |
| ReloadSwiss RS 70 | 43.5 gr | 84% | 36,550 psi | 76% | 2602 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,392 psi | 82% | 2575 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,143 psi | 76% | 2477 fps | 95.3% |
| Shooters World SW4350 | <<locked>> | 84% | 39,117 psi | 82% | 2562 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,393 psi | 84% | 2625 fps | 98.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,321 psi | 84% | 2526 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 39,798 psi | 83% | 2575 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 29,370 psi | 61% | 2421 fps | 97.7% |
| Unknown powder | <<locked>> | 80% | 35,404 psi | 74% | 2523 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 34,185 psi | 71% | 2431 fps | 99% |
| Vihtavuori N160 | <<locked>> | 80% | 35,433 psi | 74% | 2500 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 80% | 35,882 psi | 75% | 2539 fps | 96.4% |
| Vihtavuori N555 | <<locked>> | 86% | 30,879 psi | 65% | 2467 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,678 psi | 70% | 2448 fps | 98% |
| Winchester 760 | <<locked>> | 82% | 40,422 psi | 84% | 2644 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,572 psi | 60% | 2474 fps | 96.2% |
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 36 powders for 6.5 x 57 R loaded with the .264 | 125gr | SUS-TAC HPT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,822 fps; across all powders the maximum-charge window runs from 1,752 fps to 2,822 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 36 of the 36 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 125.0 gr projectile in 0.264" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Hodgdon TrailBoss, Lovex S071 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, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for 6.5 x 57 R with the .264 | 125gr | SUS-TAC HPT 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.