Load Specifications
Load data in caliber 6.5 x 57 R with .264 | 140gr | Lapua Naturalis bullet and 32 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Norma MRP and Alliant Reloder-26.
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% | 43,004 psi | 90% | 2536 fps | 98.3% |
| Accurate 4350 | <<locked>> | 82% | 41,989 psi | 88% | 2530 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 42,772 psi | 89% | 2582 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 42,540 psi | 89% | 2602 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 43,221 psi | 90% | 2608 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 42,975 psi | 90% | 2638 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 90% | 42,177 psi | 88% | 2661 fps | 99.4% |
| Bofors RP5 | <<locked>> | 92% | 42,540 psi | 89% | 2602 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 82% | 42,656 psi | 89% | 2510 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 43,004 psi | 90% | 2526 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 42,047 psi | 88% | 2661 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 82% | 42,438 psi | 89% | 2582 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,767 psi | 77% | 1673 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 40,915 psi | 85% | 2467 fps | 96.4% |
| IMR 4831 | <<locked>> | 86% | 41,249 psi | 86% | 2503 fps | 99.2% |
| Lovex S070 | <<locked>> | 82% | 42,844 psi | 90% | 2503 fps | 97.6% |
| Lovex S071 | <<locked>> | 96% | 41,321 psi | 86% | 2507 fps | 98% |
| Norma MRP | <<locked>> | 90% | 41,901 psi | 88% | 2618 fps | 97.2% |
| Norma URP | <<locked>> | 82% | 41,394 psi | 86% | 2520 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 84% | 42,511 psi | 89% | 2559 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,449 psi | 78% | 1709 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 41,321 psi | 86% | 2543 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 42,743 psi | 89% | 2608 fps | 99.1% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 41,640 psi | 87% | 2651 fps | 97.2% |
| Shooters World SW4350 | <<locked>> | 82% | 42,844 psi | 90% | 2503 fps | 97.6% |
| Somchem S365 | <<locked>> | 86% | 42,844 psi | 90% | 2575 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 42,206 psi | 88% | 2523 fps | 96.7% |
| Vihtavuori N150 | <<locked>> | 82% | 42,337 psi | 88% | 2454 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 42,670 psi | 89% | 2523 fps | 96.4% |
| Vihtavuori N555 | <<locked>> | 90% | 42,931 psi | 90% | 2589 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 41,684 psi | 87% | 2484 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 41,655 psi | 87% | 2710 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>> | 84% | 33,373 psi | 70% | 2336 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 39,305 psi | 82% | 2477 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,898 psi | 79% | 2480 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 90% | 39,929 psi | 83% | 2546 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,195 psi | 59% | 2260 fps | 97.1% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,662 psi | 66% | 2369 fps | 95.2% |
| Alliant Reloder-26 | 42.6 gr | 80% | 30,110 psi | 63% | 2369 fps | 95.5% |
| Bofors RP5 | <<locked>> | 90% | 39,929 psi | 83% | 2546 fps | 95% |
| Hodgdon H4350 | <<locked>> | 80% | 40,089 psi | 84% | 2461 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,476 psi | 74% | 2382 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,537 psi | 83% | 2605 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 39,581 psi | 83% | 2523 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,412 psi | 57% | 1490 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,479 psi | 80% | 2415 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 34,272 psi | 72% | 2356 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 40,263 psi | 84% | 2451 fps | 97% |
| Lovex S071 | <<locked>> | 88% | 32,561 psi | 68% | 2316 fps | 95.2% |
| Norma MRP | 44.4 gr | 86% | 36,724 psi | 77% | 2503 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 38,798 psi | 81% | 2467 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 80% | 37,492 psi | 78% | 2454 fps | 96.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,094 psi | 59% | 1529 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,783 psi | 81% | 2490 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,478 psi | 78% | 2497 fps | 97.9% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,564 psi | 76% | 2526 fps | 95% |
| Shooters World SW4350 | <<locked>> | 80% | 40,263 psi | 84% | 2451 fps | 97% |
| Somchem S365 | <<locked>> | 80% | 35,302 psi | 74% | 2431 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 37,246 psi | 78% | 2418 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 39,929 psi | 83% | 2408 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 40,277 psi | 84% | 2477 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 80% | 31,183 psi | 65% | 2336 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,957 psi | 81% | 2431 fps | 99.9% |
| Winchester StaBALL HD | 40.9 gr | 80% | 25,193 psi | 53% | 2244 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 32 powders for 6.5 x 57 R loaded with the .264 | 140gr | Lapua Naturalis. Winchester StaBALL HD delivers the highest muzzle velocity at 2,710 fps; across all powders the maximum-charge window runs from 1,673 fps to 2,710 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 32 of the 32 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 140.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. 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, Norma MRP, Alliant Reloder-26 rank at the top here: for 6.5 x 57 R with the .264 | 140gr | Lapua Naturalis 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.