Load Specifications
Load data in caliber 6.5 x 57 R with .264 | 139gr | Norma HP bullet and 37 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Alliant Reloder-26 and Norma MRP.
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>> | 92% | 41,321 psi | 86% | 2530 fps | 98% |
| Accurate 4350 | <<locked>> | 84% | 42,772 psi | 89% | 2569 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 84% | 41,365 psi | 86% | 2575 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 41,684 psi | 87% | 2602 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 41,423 psi | 87% | 2628 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 90% | 40,393 psi | 84% | 2644 fps | 99.1% |
| Bofors RP15 | <<locked>> | 96% | 43,149 psi | 90% | 2631 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 41,379 psi | 86% | 2520 fps | 99.9% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,105 psi | 90% | 2707 fps | 96.6% |
| Hodgdon Superformance | <<locked>> | 82% | 41,031 psi | 86% | 2575 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,448 psi | 76% | 1680 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 42,105 psi | 88% | 2510 fps | 96.7% |
| IMR 4831 | <<locked>> | 88% | 42,192 psi | 88% | 2546 fps | 99.4% |
| Lovex S065 | <<locked>> | 82% | 42,859 psi | 90% | 2507 fps | 98.5% |
| Lovex S070 | <<locked>> | 82% | 41,205 psi | 86% | 2493 fps | 97.2% |
| Lovex S071 | <<locked>> | 98% | 42,134 psi | 88% | 2546 fps | 98.2% |
| Norma MRP | <<locked>> | 90% | 40,335 psi | 84% | 2605 fps | 96.7% |
| Norma URP | <<locked>> | 84% | 42,496 psi | 89% | 2562 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 84% | 41,162 psi | 86% | 2552 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 94% | 42,090 psi | 88% | 2598 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,057 psi | 77% | 1719 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 42,801 psi | 89% | 2592 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 41,379 psi | 86% | 2602 fps | 98.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,062 psi | 90% | 2703 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 90% | 42,757 psi | 89% | 2582 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 82% | 42,859 psi | 90% | 2507 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 82% | 41,205 psi | 86% | 2493 fps | 97.2% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 42,105 psi | 88% | 2457 fps | 97.3% |
| Somchem S365 | <<locked>> | 86% | 41,336 psi | 86% | 2572 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 40,625 psi | 85% | 2513 fps | 96.2% |
| Unknown powder | <<locked>> | 82% | 42,699 psi | 89% | 2562 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 82% | 40,785 psi | 85% | 2448 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 42,975 psi | 90% | 2539 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 94% | 41,176 psi | 86% | 2516 fps | 96% |
| Vihtavuori N555 | <<locked>> | 90% | 41,133 psi | 86% | 2575 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 43,018 psi | 90% | 2530 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 42,844 psi | 90% | 2756 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>> | 86% | 33,562 psi | 70% | 2365 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 37,333 psi | 78% | 2461 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,521 psi | 76% | 2474 fps | 98.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,832 psi | 56% | 2241 fps | 96.4% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,198 psi | 67% | 2405 fps | 95.5% |
| Alliant Reloder-26 | 44.2 gr | 82% | 30,443 psi | 64% | 2398 fps | 95.6% |
| Bofors RP15 | <<locked>> | 94% | 40,451 psi | 85% | 2575 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,968 psi | 71% | 2369 fps | 99% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,451 psi | 85% | 2648 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 38,247 psi | 80% | 2513 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,195 psi | 57% | 1499 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 37,086 psi | 77% | 2405 fps | 95.1% |
| IMR 4831 | <<locked>> | 80% | 32,619 psi | 68% | 2339 fps | 97.2% |
| Lovex S065 | <<locked>> | 80% | 40,524 psi | 85% | 2461 fps | 98% |
| Lovex S070 | <<locked>> | 80% | 38,653 psi | 81% | 2441 fps | 96.5% |
| Lovex S071 | <<locked>> | 90% | 32,677 psi | 68% | 2343 fps | 95.3% |
| Norma MRP | 46.1 gr | 88% | 37,797 psi | 79% | 2552 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 37,231 psi | 78% | 2457 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 80% | 35,940 psi | 75% | 2441 fps | 96.3% |
| Ramshot Magnum | <<locked>> | 92% | 39,102 psi | 82% | 2536 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,804 psi | 58% | 1539 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,231 psi | 78% | 2480 fps | 98.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,172 psi | 76% | 2487 fps | 97.5% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,391 psi | 78% | 2572 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 88% | 40,016 psi | 84% | 2526 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,524 psi | 85% | 2461 fps | 98% |
| Shooters World SW4350 | <<locked>> | 80% | 38,653 psi | 81% | 2441 fps | 96.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,508 psi | 83% | 2405 fps | 96.6% |
| Somchem S365 | <<locked>> | 80% | 33,634 psi | 70% | 2415 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 38,130 psi | 80% | 2461 fps | 95.4% |
| Unknown powder | <<locked>> | 80% | 40,001 psi | 84% | 2507 fps | 98.4% |
| Vihtavuori N150 | <<locked>> | 80% | 38,435 psi | 80% | 2402 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,263 psi | 84% | 2487 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 92% | 38,827 psi | 81% | 2467 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 80% | 29,559 psi | 62% | 2313 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,710 psi | 79% | 2428 fps | 99.7% |
| Winchester StaBALL HD | 42.5 gr | 82% | 25,237 psi | 53% | 2267 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 37 powders for 6.5 x 57 R loaded with the .264 | 139gr | Norma HP. Winchester StaBALL HD delivers the highest muzzle velocity at 2,756 fps; across all powders the maximum-charge window runs from 1,680 fps to 2,756 fps. Hodgdon Retumbo gives the best case fill at 100 %, and 37 of the 37 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 139.0 gr projectile in 0.264" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Hodgdon Retumbo, 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. Winchester StaBALL HD, Alliant Reloder-26, Norma MRP rank at the top here: for 6.5 x 57 R with the .264 | 139gr | Norma HP 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.