Load Specifications
Load data in caliber 6.5 x 57 R with .264 | 139gr | Norma FMJ Elektron bullet and 38 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% | 41,162 psi | 86% | 2526 fps | 98% |
| Accurate 4350 | <<locked>> | 84% | 42,960 psi | 90% | 2572 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 84% | 41,495 psi | 87% | 2579 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 41,814 psi | 87% | 2605 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 41,539 psi | 87% | 2631 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 90% | 40,495 psi | 85% | 2648 fps | 99.1% |
| Bofors RP15 | <<locked>> | 96% | 43,250 psi | 90% | 2635 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 41,524 psi | 87% | 2523 fps | 99.9% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,192 psi | 90% | 2713 fps | 96.6% |
| Hodgdon Superformance | <<locked>> | 82% | 41,133 psi | 86% | 2579 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,376 psi | 76% | 1680 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 42,264 psi | 88% | 2513 fps | 96.7% |
| IMR 4831 | <<locked>> | 88% | 42,351 psi | 88% | 2546 fps | 99.4% |
| Lovex S065 | <<locked>> | 82% | 43,033 psi | 90% | 2510 fps | 98.6% |
| Lovex S070 | <<locked>> | 82% | 41,336 psi | 86% | 2497 fps | 97.3% |
| Lovex S071 | <<locked>> | 98% | 42,322 psi | 88% | 2549 fps | 98.2% |
| Norma MRP | <<locked>> | 92% | 43,207 psi | 90% | 2667 fps | 97.5% |
| Norma URP | <<locked>> | 84% | 42,627 psi | 89% | 2569 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 84% | 41,307 psi | 86% | 2556 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 94% | 42,221 psi | 88% | 2602 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,260 psi | 78% | 1726 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 42,641 psi | 89% | 2592 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 41,495 psi | 87% | 2605 fps | 98.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,149 psi | 90% | 2707 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 90% | 42,902 psi | 90% | 2585 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 82% | 43,033 psi | 90% | 2510 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 82% | 41,336 psi | 86% | 2497 fps | 97.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 42,235 psi | 88% | 2457 fps | 97.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,511 psi | 89% | 2582 fps | 95.9% |
| Somchem S365 | <<locked>> | 86% | 41,481 psi | 87% | 2575 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 40,770 psi | 85% | 2516 fps | 96.3% |
| Unknown powder | <<locked>> | 82% | 42,873 psi | 90% | 2566 fps | 99% |
| Vihtavuori N150 | <<locked>> | 82% | 40,915 psi | 85% | 2451 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 43,134 psi | 90% | 2543 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 94% | 41,336 psi | 86% | 2516 fps | 96% |
| Vihtavuori N555 | <<locked>> | 90% | 41,031 psi | 86% | 2575 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 43,178 psi | 90% | 2533 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 42,960 psi | 90% | 2759 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% | 33,663 psi | 70% | 2369 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 37,463 psi | 78% | 2464 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,651 psi | 77% | 2477 fps | 98.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,774 psi | 56% | 2241 fps | 96.4% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,314 psi | 68% | 2408 fps | 95.5% |
| Alliant Reloder-26 | 44.3 gr | 82% | 30,560 psi | 64% | 2402 fps | 95.7% |
| Bofors RP15 | <<locked>> | 94% | 40,582 psi | 85% | 2579 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,098 psi | 71% | 2372 fps | 99% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,538 psi | 85% | 2651 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 38,348 psi | 80% | 2516 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,137 psi | 57% | 1499 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 37,246 psi | 78% | 2408 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 32,779 psi | 68% | 2346 fps | 97.2% |
| Lovex S065 | <<locked>> | 80% | 40,393 psi | 84% | 2457 fps | 98% |
| Lovex S070 | <<locked>> | 80% | 38,798 psi | 81% | 2444 fps | 96.5% |
| Lovex S071 | <<locked>> | 90% | 32,779 psi | 68% | 2346 fps | 95.3% |
| Norma MRP | 46.2 gr | 88% | 37,927 psi | 79% | 2552 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 37,376 psi | 78% | 2461 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 80% | 36,071 psi | 75% | 2444 fps | 96.4% |
| Ramshot Magnum | <<locked>> | 92% | 39,175 psi | 82% | 2539 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,746 psi | 58% | 1539 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,130 psi | 78% | 2480 fps | 98.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,056 psi | 75% | 2484 fps | 97.5% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,507 psi | 78% | 2575 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 88% | 40,132 psi | 84% | 2530 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,393 psi | 84% | 2457 fps | 98% |
| Shooters World SW4350 | <<locked>> | 80% | 38,798 psi | 81% | 2444 fps | 96.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,624 psi | 83% | 2408 fps | 96.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 39,755 psi | 83% | 2526 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 33,794 psi | 71% | 2418 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 38,247 psi | 80% | 2464 fps | 95.5% |
| Unknown powder | <<locked>> | 80% | 40,176 psi | 84% | 2510 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 80% | 38,348 psi | 80% | 2402 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,161 psi | 84% | 2484 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 92% | 38,696 psi | 81% | 2467 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 80% | 29,486 psi | 62% | 2313 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,869 psi | 79% | 2431 fps | 99.8% |
| Winchester StaBALL HD | 42.6 gr | 82% | 25,309 psi | 53% | 2270 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 60 powders for 6.5 x 57 R loaded with the .264 | 139gr | Norma FMJ Elektron. Winchester StaBALL HD delivers the highest muzzle velocity at 2,759 fps; across all powders the maximum-charge window runs from 1,680 fps to 2,759 fps. ADI AR 2217 gives the best case fill at 100 %, and 60 of the 60 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 74–90 %, 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. ADI AR 2217, ADI AR 2225, Bofors RP30 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 FMJ Elektron they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, ADI AR 2217 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.