Load Specifications
Load data in caliber 6.5 x 57 R with .264 | 127gr | Barnes LRX BT bullet and 34 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>> | 98% | 42,743 psi | 89% | 2661 fps | 97.2% |
| Accurate 4350 | <<locked>> | 88% | 42,235 psi | 88% | 2671 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 88% | 41,452 psi | 87% | 2684 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 84% | 41,133 psi | 86% | 2697 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 40,828 psi | 85% | 2694 fps | 99.6% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,029 psi | 79% | 2644 fps | 96.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 42,714 psi | 89% | 2799 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 86% | 41,901 psi | 88% | 2664 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 40,828 psi | 85% | 2621 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,766 psi | 75% | 1736 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 40,466 psi | 85% | 2621 fps | 98.3% |
| Lovex S065 | <<locked>> | 86% | 43,062 psi | 90% | 2612 fps | 97.5% |
| Lovex S070 | <<locked>> | 86% | 40,901 psi | 85% | 2589 fps | 95.8% |
| Norma MRP | <<locked>> | 96% | 42,583 psi | 89% | 2753 fps | 95.9% |
| Norma URP | <<locked>> | 88% | 42,018 psi | 88% | 2664 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 88% | 40,988 psi | 86% | 2654 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,245 psi | 76% | 1778 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 40,930 psi | 86% | 2700 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 41,945 psi | 88% | 2687 fps | 98.3% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 41,495 psi | 87% | 2703 fps | 97.8% |
| Rottweil R 903 | <<locked>> | 82% | 41,234 psi | 86% | 2602 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 43,062 psi | 90% | 2612 fps | 97.5% |
| Shooters World SW4350 | <<locked>> | 86% | 40,901 psi | 85% | 2589 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 42,482 psi | 89% | 2654 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,511 psi | 89% | 2559 fps | 96.1% |
| Somchem S355 | <<locked>> | 82% | 41,959 psi | 88% | 2605 fps | 99.5% |
| Somchem S365 | <<locked>> | 90% | 40,393 psi | 84% | 2671 fps | 100% |
| Vihtavuori N150 | <<locked>> | 84% | 42,830 psi | 89% | 2592 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 41,060 psi | 86% | 2612 fps | 98.2% |
| Vihtavuori N550 | <<locked>> | 88% | 43,134 psi | 90% | 2667 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 96% | 42,525 psi | 89% | 2717 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 40,654 psi | 85% | 2589 fps | 99.6% |
| Winchester 760 | <<locked>> | 86% | 41,901 psi | 88% | 2664 fps | 96% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,001 psi | 81% | 2772 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% | 37,260 psi | 78% | 2549 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 31,734 psi | 66% | 2434 fps | 95.4% |
| Alliant Reloder-16 | 38 gr | 80% | 32,039 psi | 67% | 2457 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,853 psi | 75% | 2582 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 86% | 27,789 psi | 58% | 2362 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,882 psi | 75% | 2589 fps | 95.4% |
| Alliant Reloder-26 | 47.1 gr | 90% | 34,200 psi | 71% | 2598 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 84% | 39,146 psi | 82% | 2605 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,312 psi | 61% | 2352 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,571 psi | 56% | 1549 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 30,777 psi | 64% | 2395 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 35,520 psi | 74% | 2451 fps | 95.3% |
| Lovex S070 | <<locked>> | 84% | 38,479 psi | 80% | 2536 fps | 95% |
| Norma MRP | <<locked>> | 94% | 39,798 psi | 83% | 2694 fps | 95% |
| Norma URP | <<locked>> | 80% | 31,981 psi | 67% | 2438 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 86% | 38,348 psi | 80% | 2595 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,064 psi | 57% | 1591 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,203 psi | 80% | 2644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 33,982 psi | 71% | 2513 fps | 95.9% |
| ReloadSwiss RS 70 | 43.6 gr | 84% | 36,071 psi | 75% | 2579 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 38,435 psi | 80% | 2546 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,520 psi | 74% | 2451 fps | 95.3% |
| Shooters World SW4350 | <<locked>> | 84% | 38,479 psi | 80% | 2536 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,711 psi | 83% | 2598 fps | 98.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 39,726 psi | 83% | 2503 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 39,204 psi | 82% | 2552 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 28,747 psi | 60% | 2395 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 80% | 37,318 psi | 78% | 2487 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 33,547 psi | 70% | 2444 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 32,895 psi | 69% | 2441 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 86% | 30,182 psi | 63% | 2438 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,982 psi | 69% | 2418 fps | 98% |
| Winchester 760 | <<locked>> | 84% | 39,146 psi | 82% | 2605 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,891 psi | 58% | 2441 fps | 96% |
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 34 powders for 6.5 x 57 R loaded with the .264 | 127gr | Barnes LRX BT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,799 fps; across all powders the maximum-charge window runs from 1,736 fps to 2,799 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 34 of the 34 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 127.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Hodgdon TrailBoss, ReloadSwiss RS 14 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 | 127gr | Barnes LRX BT 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.