Load Specifications
Load data in caliber 6.5 x 57 R with .264 | 140gr | Nosler Partition 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% | 41,263 psi | 86% | 2520 fps | 98% |
| Accurate 4350 | <<locked>> | 84% | 43,004 psi | 90% | 2562 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 41,495 psi | 87% | 2569 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 41,916 psi | 88% | 2595 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 41,626 psi | 87% | 2621 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 90% | 40,625 psi | 85% | 2641 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 82% | 41,437 psi | 87% | 2500 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 41,539 psi | 87% | 2513 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 82% | 41,220 psi | 86% | 2569 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,608 psi | 76% | 1677 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 42,264 psi | 88% | 2503 fps | 96.8% |
| IMR 4831 | <<locked>> | 88% | 42,409 psi | 89% | 2539 fps | 99.4% |
| Lovex S065 | <<locked>> | 82% | 43,033 psi | 90% | 2500 fps | 98.6% |
| Lovex S070 | <<locked>> | 82% | 41,321 psi | 86% | 2487 fps | 97.3% |
| Lovex S071 | <<locked>> | 98% | 42,380 psi | 89% | 2539 fps | 98.3% |
| Norma MRP | <<locked>> | 92% | 43,279 psi | 90% | 2657 fps | 97.6% |
| Norma URP | <<locked>> | 84% | 42,699 psi | 89% | 2559 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 84% | 41,365 psi | 86% | 2549 fps | 98% |
| Ramshot Magnum | <<locked>> | 94% | 42,061 psi | 88% | 2592 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,217 psi | 78% | 1716 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 42,714 psi | 89% | 2582 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 41,568 psi | 87% | 2598 fps | 99% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,047 psi | 90% | 2697 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 90% | 42,989 psi | 90% | 2579 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 82% | 43,033 psi | 90% | 2500 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 82% | 41,321 psi | 86% | 2487 fps | 97.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 42,264 psi | 88% | 2451 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,583 psi | 89% | 2572 fps | 96% |
| Somchem S365 | <<locked>> | 86% | 41,524 psi | 87% | 2566 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 40,843 psi | 85% | 2507 fps | 96.4% |
| Unknown powder | <<locked>> | 82% | 42,902 psi | 90% | 2556 fps | 99% |
| Vihtavuori N150 | <<locked>> | 82% | 40,915 psi | 85% | 2441 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 43,178 psi | 90% | 2533 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 94% | 41,394 psi | 86% | 2510 fps | 96.1% |
| Vihtavuori N555 | <<locked>> | 90% | 41,089 psi | 86% | 2566 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 43,236 psi | 90% | 2523 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 42,830 psi | 89% | 2746 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% | 33,721 psi | 70% | 2359 fps | 95.8% |
| Accurate 4350 | <<locked>> | 80% | 37,492 psi | 78% | 2454 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,666 psi | 77% | 2467 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,948 psi | 56% | 2238 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,358 psi | 68% | 2402 fps | 95.7% |
| Alliant Reloder-26 | 44.1 gr | 82% | 30,618 psi | 64% | 2395 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 80% | 39,146 psi | 82% | 2451 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,098 psi | 71% | 2362 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 80% | 38,406 psi | 80% | 2510 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,296 psi | 57% | 1496 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 37,246 psi | 78% | 2402 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 32,750 psi | 68% | 2333 fps | 97.3% |
| Lovex S065 | <<locked>> | 80% | 40,669 psi | 85% | 2454 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 38,812 psi | 81% | 2434 fps | 96.6% |
| Lovex S071 | <<locked>> | 90% | 32,822 psi | 69% | 2339 fps | 95.4% |
| Norma MRP | 45.9 gr | 88% | 37,768 psi | 79% | 2543 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 37,376 psi | 78% | 2451 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 80% | 36,114 psi | 75% | 2438 fps | 96.5% |
| Ramshot Magnum | <<locked>> | 92% | 39,059 psi | 82% | 2526 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,659 psi | 58% | 1529 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,159 psi | 78% | 2470 fps | 98.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,071 psi | 75% | 2477 fps | 97.6% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,608 psi | 79% | 2569 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 88% | 40,190 psi | 84% | 2523 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,669 psi | 85% | 2454 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 80% | 38,812 psi | 81% | 2434 fps | 96.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,610 psi | 83% | 2398 fps | 96.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 39,813 psi | 83% | 2516 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 33,808 psi | 71% | 2411 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 38,290 psi | 80% | 2454 fps | 95.6% |
| Unknown powder | <<locked>> | 80% | 40,161 psi | 84% | 2503 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 80% | 38,580 psi | 81% | 2398 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,422 psi | 84% | 2480 fps | 99% |
| Vihtavuori N165 | <<locked>> | 92% | 38,783 psi | 81% | 2461 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 80% | 29,486 psi | 62% | 2303 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,898 psi | 79% | 2425 fps | 99.8% |
| Winchester StaBALL HD | 42.4 gr | 82% | 25,353 psi | 53% | 2267 fps | 96.4% |
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 | 140gr | Nosler Partition. Winchester StaBALL HD delivers the highest muzzle velocity at 2,746 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,746 fps. Hodgdon TrailBoss 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 140.0 gr projectile in 0.264" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, ReloadSwiss RS 76 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 | 140gr | 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.