Load Specifications
Load data in caliber 6.5 x 57 R with .264 | 130gr | Sierra GameKing bullet and 33 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% | 42,917 psi | 90% | 2635 fps | 97.6% |
| Accurate 4350 | <<locked>> | 86% | 42,119 psi | 88% | 2635 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 40,944 psi | 86% | 2644 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 82% | 40,727 psi | 85% | 2657 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 40,799 psi | 85% | 2661 fps | 99.7% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,524 psi | 85% | 2677 fps | 97.7% |
| Alliant Reloder-26 | <<locked>> | 94% | 42,409 psi | 89% | 2762 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 84% | 41,524 psi | 87% | 2625 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 40,770 psi | 85% | 2585 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,216 psi | 76% | 1726 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,902 psi | 90% | 2575 fps | 96.4% |
| IMR 4831 | <<locked>> | 88% | 43,033 psi | 90% | 2638 fps | 99% |
| Lovex S065 | <<locked>> | 84% | 42,641 psi | 89% | 2575 fps | 97.8% |
| Lovex S070 | <<locked>> | 84% | 40,872 psi | 85% | 2559 fps | 96.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,901 psi | 85% | 2595 fps | 97.1% |
| Norma MRP | <<locked>> | 94% | 42,482 psi | 89% | 2726 fps | 96.4% |
| Norma URP | <<locked>> | 86% | 41,945 psi | 88% | 2631 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 86% | 40,654 psi | 85% | 2618 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,767 psi | 77% | 1765 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 41,727 psi | 87% | 2651 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 41,002 psi | 86% | 2667 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 84% | 42,641 psi | 89% | 2575 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 84% | 40,872 psi | 85% | 2559 fps | 96.2% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,003 psi | 88% | 2523 fps | 96.3% |
| Somchem S365 | <<locked>> | 90% | 43,062 psi | 90% | 2687 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 42,844 psi | 90% | 2628 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 82% | 42,351 psi | 88% | 2549 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 40,669 psi | 85% | 2572 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 86% | 42,786 psi | 89% | 2628 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 94% | 42,467 psi | 89% | 2684 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 42,786 psi | 89% | 2598 fps | 99.9% |
| Winchester 760 | <<locked>> | 84% | 41,785 psi | 87% | 2631 fps | 96.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,742 psi | 87% | 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>> | 90% | 35,143 psi | 73% | 2474 fps | 95.2% |
| Accurate 4350 | <<locked>> | 80% | 34,345 psi | 72% | 2470 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,823 psi | 71% | 2477 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,130 psi | 80% | 2605 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,949 psi | 58% | 2339 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,868 psi | 75% | 2566 fps | 95.9% |
| Alliant Reloder-26 | 45.5 gr | 86% | 32,068 psi | 67% | 2510 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 82% | 38,856 psi | 81% | 2569 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,430 psi | 66% | 2379 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,079 psi | 57% | 1542 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,263 psi | 84% | 2520 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 33,141 psi | 69% | 2425 fps | 96.4% |
| Lovex S065 | <<locked>> | 80% | 37,739 psi | 79% | 2474 fps | 96.4% |
| Lovex S070 | <<locked>> | 82% | 38,305 psi | 80% | 2503 fps | 95.4% |
| Lovex S071 | <<locked>> | 96% | 36,129 psi | 75% | 2493 fps | 95.6% |
| Norma MRP | <<locked>> | 92% | 39,494 psi | 83% | 2657 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 34,258 psi | 72% | 2464 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 82% | 35,679 psi | 75% | 2507 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,383 psi | 57% | 1578 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,823 psi | 71% | 2480 fps | 96.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 33,315 psi | 70% | 2480 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,739 psi | 79% | 2474 fps | 96.4% |
| Shooters World SW4350 | <<locked>> | 82% | 38,305 psi | 80% | 2503 fps | 95.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,334 psi | 82% | 2467 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 30,980 psi | 65% | 2425 fps | 98.7% |
| Somchem S385 | <<locked>> | 90% | 40,089 psi | 84% | 2572 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 39,624 psi | 83% | 2500 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 35,795 psi | 75% | 2470 fps | 97.1% |
| Vihtavuori N550 | <<locked>> | 80% | 35,157 psi | 73% | 2467 fps | 96.7% |
| Vihtavuori N555 | 39.6 gr | 82% | 28,689 psi | 60% | 2362 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,128 psi | 73% | 2444 fps | 98.9% |
| Winchester 760 | <<locked>> | 82% | 38,856 psi | 81% | 2569 fps | 95.4% |
| Winchester StaBALL HD | 43.7 gr | 86% | 26,368 psi | 55% | 2362 fps | 95.4% |
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 33 powders for 6.5 x 57 R loaded with the .264 | 130gr | Sierra GameKing. Winchester StaBALL HD delivers the highest muzzle velocity at 2,808 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,808 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 33 of the 33 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 76–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.264" calls for a 1:11.5 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, Winchester StaBALL HD, Vihtavuori N555 rank at the top here: for 6.5 x 57 R with the .264 | 130gr | Sierra GameKing 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.