Load Specifications
Load data in caliber 6.5 x 57 R with .264 | 144gr | Sierra MatchKing bullet and 36 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% | 41,930 psi | 88% | 2497 fps | 98.4% |
| Accurate 4350 | <<locked>> | 82% | 40,625 psi | 85% | 2484 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 41,945 psi | 88% | 2543 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,901 psi | 88% | 2566 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 94% | 42,279 psi | 88% | 2569 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 42,061 psi | 88% | 2598 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 90% | 41,133 psi | 86% | 2618 fps | 99.4% |
| Bofors RP5 | <<locked>> | 92% | 41,901 psi | 88% | 2566 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 82% | 41,858 psi | 87% | 2474 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 42,047 psi | 88% | 2484 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,118 psi | 86% | 2625 fps | 96.3% |
| Hodgdon Superformance | <<locked>> | 82% | 41,568 psi | 87% | 2543 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,666 psi | 77% | 1650 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 42,728 psi | 89% | 2477 fps | 97.2% |
| IMR 4831 | <<locked>> | 88% | 42,627 psi | 89% | 2507 fps | 99.6% |
| Lovex S070 | <<locked>> | 82% | 41,771 psi | 87% | 2461 fps | 97.7% |
| Lovex S071 | <<locked>> | 98% | 42,815 psi | 89% | 2513 fps | 98.6% |
| Norma MRP | <<locked>> | 90% | 40,973 psi | 86% | 2579 fps | 97.3% |
| Norma URP | <<locked>> | 84% | 43,149 psi | 90% | 2530 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 41,901 psi | 88% | 2523 fps | 98.3% |
| Ramshot Magnum | <<locked>> | 94% | 42,612 psi | 89% | 2569 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,304 psi | 78% | 1690 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 43,308 psi | 90% | 2556 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 41,872 psi | 87% | 2569 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 40,654 psi | 85% | 2612 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 90% | 43,308 psi | 90% | 2549 fps | 96.5% |
| Shooters World SW4350 | <<locked>> | 82% | 41,771 psi | 87% | 2461 fps | 97.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 42,670 psi | 89% | 2425 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,917 psi | 90% | 2543 fps | 96.4% |
| Somchem S365 | <<locked>> | 86% | 42,134 psi | 88% | 2539 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 41,408 psi | 87% | 2487 fps | 96.8% |
| Vihtavuori N150 | <<locked>> | 82% | 41,278 psi | 86% | 2411 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 42,047 psi | 88% | 2490 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 90% | 41,713 psi | 87% | 2543 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 40,872 psi | 85% | 2444 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 40,640 psi | 85% | 2667 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% | 31,966 psi | 67% | 2287 fps | 95.4% |
| Accurate 4350 | <<locked>> | 80% | 37,913 psi | 79% | 2428 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,985 psi | 77% | 2441 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 90% | 39,204 psi | 82% | 2510 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,209 psi | 57% | 2218 fps | 97% |
| Alliant Reloder-25 | <<locked>> | 88% | 30,792 psi | 64% | 2329 fps | 95.2% |
| Alliant Reloder-26 | 42.5 gr | 80% | 28,892 psi | 60% | 2316 fps | 95.2% |
| Bofors RP5 | <<locked>> | 90% | 39,204 psi | 82% | 2510 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 80% | 39,450 psi | 82% | 2425 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,461 psi | 72% | 2339 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 96% | 38,595 psi | 81% | 2562 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 38,711 psi | 81% | 2484 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 57% | 1470 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 37,565 psi | 78% | 2375 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 33,272 psi | 70% | 2313 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 39,160 psi | 82% | 2408 fps | 97% |
| Lovex S071 | <<locked>> | 88% | 31,082 psi | 65% | 2267 fps | 95% |
| Norma MRP | 44.3 gr | 86% | 35,679 psi | 75% | 2461 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 37,753 psi | 79% | 2425 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 80% | 36,535 psi | 76% | 2415 fps | 96.9% |
| Ramshot Magnum | <<locked>> | 92% | 39,552 psi | 83% | 2507 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,891 psi | 58% | 1509 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,652 psi | 79% | 2448 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,521 psi | 76% | 2454 fps | 98% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 35,505 psi | 74% | 2484 fps | 95% |
| Rottweil R 905 | <<locked>> | 88% | 40,770 psi | 85% | 2500 fps | 95.8% |
| Shooters World SW4350 | <<locked>> | 80% | 39,160 psi | 82% | 2408 fps | 97% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,001 psi | 84% | 2372 fps | 97.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,393 psi | 84% | 2493 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 34,185 psi | 71% | 2385 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 36,332 psi | 76% | 2382 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 38,856 psi | 81% | 2365 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 39,378 psi | 82% | 2438 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 80% | 30,066 psi | 63% | 2287 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,101 psi | 80% | 2395 fps | 99.9% |
| Winchester StaBALL HD | 40.8 gr | 80% | 23,946 psi | 50% | 2185 fps | 95.7% |
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 58 powders for 6.5 x 57 R loaded with the .264 | 144gr | Sierra MatchKing. Winchester StaBALL HD delivers the highest muzzle velocity at 2,667 fps; across all powders the maximum-charge window runs from 1,650 fps to 2,667 fps. ADI AR 2217 gives the best case fill at 100 %, and 58 of the 58 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 65–90 %, leaving at least 10 % headroom. The 144.0 gr projectile in 0.264" calls for a 1:9.0 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 | 144gr | Sierra MatchKing 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.