Load Specifications
Load data in caliber 6.5 x 57 R with .264 | 125gr | Nosler Partition bullet and 32 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 Alliant Reloder-23.
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% | 40,654 psi | 85% | 2644 fps | 96.8% |
| Accurate 4350 | <<locked>> | 86% | 42,511 psi | 89% | 2700 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 41,133 psi | 86% | 2703 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 82% | 41,118 psi | 86% | 2720 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 41,075 psi | 86% | 2723 fps | 99.7% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,075 psi | 86% | 2743 fps | 97.6% |
| Alliant Reloder-26 | <<locked>> | 94% | 43,004 psi | 90% | 2828 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 84% | 41,872 psi | 87% | 2687 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 40,915 psi | 85% | 2644 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,172 psi | 76% | 1775 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,917 psi | 90% | 2631 fps | 96.1% |
| IMR 4831 | <<locked>> | 86% | 40,654 psi | 85% | 2648 fps | 98.4% |
| Lovex S065 | <<locked>> | 84% | 42,888 psi | 90% | 2635 fps | 97.6% |
| Lovex S070 | <<locked>> | 84% | 41,046 psi | 86% | 2615 fps | 96% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,452 psi | 87% | 2657 fps | 97% |
| Norma MRP | <<locked>> | 94% | 42,888 psi | 90% | 2789 fps | 96.2% |
| Norma URP | <<locked>> | 86% | 42,076 psi | 88% | 2690 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 86% | 40,857 psi | 85% | 2674 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,695 psi | 77% | 1814 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 42,235 psi | 88% | 2717 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 41,104 psi | 86% | 2723 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 42,888 psi | 90% | 2635 fps | 97.6% |
| Shooters World SW4350 | <<locked>> | 84% | 41,046 psi | 86% | 2615 fps | 96% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,424 psi | 89% | 2585 fps | 96.2% |
| Somchem S365 | <<locked>> | 88% | 40,828 psi | 85% | 2700 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 42,656 psi | 89% | 2612 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 41,133 psi | 86% | 2638 fps | 98.3% |
| Vihtavuori N550 | <<locked>> | 86% | 43,076 psi | 90% | 2687 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 94% | 42,902 psi | 90% | 2746 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 43,149 psi | 90% | 2661 fps | 99.9% |
| Winchester 760 | <<locked>> | 84% | 41,872 psi | 87% | 2687 fps | 96.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,148 psi | 88% | 2871 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% | 37,768 psi | 79% | 2582 fps | 95.8% |
| Accurate 4350 | <<locked>> | 80% | 34,461 psi | 72% | 2523 fps | 96.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,171 psi | 71% | 2536 fps | 96.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,290 psi | 80% | 2661 fps | 99.3% |
| Alliant Reloder-23 | 41.9 gr | 84% | 28,123 psi | 59% | 2392 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,071 psi | 75% | 2618 fps | 95.7% |
| Alliant Reloder-26 | 47.2 gr | 86% | 32,343 psi | 68% | 2566 fps | 95% |
| Hodgdon H414 | <<locked>> | 82% | 39,044 psi | 82% | 2628 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,575 psi | 66% | 2434 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,093 psi | 57% | 1588 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,321 psi | 84% | 2579 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 33,431 psi | 70% | 2484 fps | 96.3% |
| Lovex S065 | <<locked>> | 80% | 37,855 psi | 79% | 2530 fps | 96.2% |
| Lovex S070 | <<locked>> | 82% | 38,580 psi | 81% | 2562 fps | 95.2% |
| Lovex S071 | <<locked>> | 96% | 36,274 psi | 76% | 2549 fps | 95.3% |
| Norma MRP | <<locked>> | 92% | 40,001 psi | 84% | 2723 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 34,577 psi | 72% | 2523 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 84% | 38,377 psi | 80% | 2621 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,383 psi | 57% | 1621 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,258 psi | 72% | 2539 fps | 96.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 33,620 psi | 70% | 2536 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,855 psi | 79% | 2530 fps | 96.2% |
| Shooters World SW4350 | <<locked>> | 82% | 38,580 psi | 81% | 2562 fps | 95.2% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,552 psi | 83% | 2526 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 31,053 psi | 65% | 2477 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 80% | 40,016 psi | 84% | 2562 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 35,853 psi | 75% | 2523 fps | 96.8% |
| Vihtavuori N550 | <<locked>> | 80% | 35,418 psi | 74% | 2523 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 84% | 30,748 psi | 64% | 2467 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,215 psi | 74% | 2497 fps | 98.7% |
| Winchester 760 | <<locked>> | 82% | 39,291 psi | 82% | 2631 fps | 95.2% |
| Winchester StaBALL HD | 45.3 gr | 86% | 26,542 psi | 55% | 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 32 powders for 6.5 x 57 R loaded with the .264 | 125gr | Nosler Partition. Winchester StaBALL HD delivers the highest muzzle velocity at 2,871 fps; across all powders the maximum-charge window runs from 1,775 fps to 2,871 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 32 of the 32 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 125.0 gr projectile in 0.264" calls for a 1:10.5 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, Alliant Reloder-23 rank at the top here: for 6.5 x 57 R with the .264 | 125gr | Nosler Partition 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.