Load Specifications
Load data in caliber 6.5 x 57 R with .264 | 123gr | MRR Green Hunting bullet and 35 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% | 40,654 psi | 85% | 2665 fps | 96.5% |
| Accurate 4350 | <<locked>> | 88% | 42,902 psi | 90% | 2717 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 41,626 psi | 87% | 2732 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 41,568 psi | 87% | 2754 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 41,220 psi | 86% | 2748 fps | 99.5% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,885 psi | 81% | 2702 fps | 96.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 43,004 psi | 90% | 2851 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 84% | 43,178 psi | 90% | 2734 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 41,307 psi | 86% | 2674 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,970 psi | 77% | 1776 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 43,033 psi | 90% | 2625 fps | 96% |
| IMR 4831 | <<locked>> | 92% | 41,872 psi | 87% | 2693 fps | 98.4% |
| Lovex S065 | <<locked>> | 84% | 40,959 psi | 86% | 2614 fps | 96.8% |
| Lovex S070 | <<locked>> | 86% | 41,510 psi | 87% | 2645 fps | 95.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,697 psi | 83% | 2625 fps | 95.9% |
| Norma URP | <<locked>> | 88% | 42,511 psi | 89% | 2719 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 88% | 41,394 psi | 86% | 2708 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,767 psi | 77% | 1817 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 41,365 psi | 86% | 2758 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 42,395 psi | 89% | 2742 fps | 98.2% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 41,858 psi | 87% | 2757 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 41,989 psi | 88% | 2661 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 40,959 psi | 86% | 2614 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 42,960 psi | 90% | 2711 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 43,105 psi | 90% | 2614 fps | 96% |
| Somchem S355 | <<locked>> | 82% | 42,395 psi | 89% | 2660 fps | 99.5% |
| Somchem S365 | <<locked>> | 90% | 40,857 psi | 85% | 2727 fps | 99.9% |
| Unknown powder | <<locked>> | 86% | 43,149 psi | 90% | 2723 fps | 98% |
| Vihtavuori N150 | <<locked>> | 86% | 41,191 psi | 86% | 2609 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 86% | 43,163 psi | 90% | 2694 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 84% | 41,031 psi | 86% | 2685 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 96% | 43,018 psi | 90% | 2774 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 41,031 psi | 86% | 2640 fps | 99.5% |
| Winchester 760 | <<locked>> | 84% | 43,178 psi | 90% | 2734 fps | 96.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,682 psi | 83% | 2834 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% | 37,913 psi | 79% | 2607 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 32,372 psi | 68% | 2480 fps | 95.3% |
| Alliant Reloder-16 | 38.3 gr | 80% | 32,401 psi | 68% | 2507 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,390 psi | 76% | 2637 fps | 98.6% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,456 psi | 59% | 2421 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,289 psi | 76% | 2640 fps | 95.3% |
| Alliant Reloder-26 | 47.6 gr | 90% | 34,954 psi | 73% | 2658 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 82% | 40,147 psi | 84% | 2671 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,805 psi | 62% | 2405 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,934 psi | 56% | 1588 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,625 psi | 85% | 2574 fps | 95.2% |
| IMR 4831 | <<locked>> | 84% | 32,387 psi | 68% | 2478 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 36,245 psi | 76% | 2510 fps | 95.3% |
| Lovex S070 | <<locked>> | 84% | 38,914 psi | 81% | 2589 fps | 95% |
| Lovex S071 | <<locked>> | 98% | 36,579 psi | 76% | 2573 fps | 95% |
| Norma URP | <<locked>> | 80% | 32,634 psi | 68% | 2496 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 86% | 38,798 psi | 81% | 2651 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 57% | 1622 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,696 psi | 81% | 2701 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,360 psi | 72% | 2566 fps | 95.8% |
| ReloadSwiss RS 70 | 44 gr | 84% | 36,535 psi | 76% | 2633 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,262 psi | 82% | 2606 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,245 psi | 76% | 2510 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,190 psi | 84% | 2655 fps | 98.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,379 psi | 84% | 2559 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 39,958 psi | 83% | 2611 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 29,254 psi | 61% | 2448 fps | 97.6% |
| Unknown powder | <<locked>> | 80% | 35,273 psi | 74% | 2551 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 34,084 psi | 71% | 2460 fps | 99% |
| Vihtavuori N160 | <<locked>> | 80% | 35,273 psi | 74% | 2526 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 80% | 35,969 psi | 75% | 2572 fps | 96.4% |
| Vihtavuori N555 | <<locked>> | 86% | 30,705 psi | 64% | 2493 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,518 psi | 70% | 2472 fps | 98% |
| Winchester 760 | <<locked>> | 82% | 40,147 psi | 84% | 2671 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,514 psi | 60% | 2503 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 35 powders for 6.5 x 57 R loaded with the .264 | 123gr | MRR Green Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 2,851 fps; across all powders the maximum-charge window runs from 1,776 fps to 2,851 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 35 of the 35 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 77–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.264" calls for a 1:9.5 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, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for 6.5 x 57 R with the .264 | 123gr | MRR Green Hunting 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.