Load Specifications
Load data in caliber 6.5 x 57 R with .264 | 123gr | Lapua Scenar bullet and 28 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and ReloadSwiss RS 70.
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>> | 98% | 43,033 psi | 90% | 2700 fps | 96.9% |
| Accurate 4350 | <<locked>> | 88% | 42,264 psi | 88% | 2703 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 41,307 psi | 86% | 2713 fps | 98.4% |
| Alliant Reloder-17 | <<locked>> | 84% | 41,292 psi | 86% | 2736 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 40,988 psi | 86% | 2730 fps | 99.4% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,247 psi | 80% | 2677 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 42,815 psi | 89% | 2835 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 41,002 psi | 86% | 2657 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 75% | 1765 fps | 100% |
| IMR 4831 | <<locked>> | 90% | 43,250 psi | 90% | 2707 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 43,120 psi | 90% | 2648 fps | 97.2% |
| Norma URP | <<locked>> | 88% | 42,221 psi | 88% | 2700 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 88% | 40,886 psi | 85% | 2684 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,593 psi | 76% | 1811 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 41,104 psi | 86% | 2740 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 42,076 psi | 88% | 2726 fps | 98% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 41,365 psi | 86% | 2733 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 82% | 41,655 psi | 87% | 2641 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 86% | 43,120 psi | 90% | 2648 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 42,641 psi | 89% | 2694 fps | 99.2% |
| Somchem S355 | <<locked>> | 82% | 42,061 psi | 88% | 2641 fps | 99.4% |
| Somchem S365 | <<locked>> | 92% | 43,134 psi | 90% | 2759 fps | 100% |
| Vihtavuori N150 | <<locked>> | 84% | 42,815 psi | 89% | 2625 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 86% | 41,234 psi | 86% | 2648 fps | 97.9% |
| Vihtavuori N550 | <<locked>> | 88% | 43,308 psi | 90% | 2703 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 96% | 42,424 psi | 89% | 2749 fps | 98.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 40,799 psi | 85% | 2625 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,175 psi | 82% | 2808 fps | 99.9% |
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>> | 94% | 37,666 psi | 79% | 2589 fps | 95.3% |
| Accurate 4350 | <<locked>> | 80% | 32,053 psi | 67% | 2474 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,140 psi | 67% | 2487 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,897 psi | 75% | 2612 fps | 98.4% |
| Alliant Reloder-23 | <<locked>> | 88% | 29,936 psi | 63% | 2454 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,114 psi | 75% | 2621 fps | 95% |
| Alliant Reloder-26 | 47.2 gr | 90% | 34,519 psi | 72% | 2635 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,733 psi | 62% | 2392 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 56% | 1581 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 33,243 psi | 69% | 2487 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 35,955 psi | 75% | 2490 fps | 95% |
| Norma URP | <<locked>> | 80% | 32,329 psi | 68% | 2477 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 86% | 38,305 psi | 80% | 2628 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,180 psi | 57% | 1614 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,174 psi | 80% | 2677 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,069 psi | 71% | 2546 fps | 95.5% |
| ReloadSwiss RS 70 | 43.7 gr | 84% | 36,303 psi | 76% | 2612 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 38,914 psi | 81% | 2589 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,955 psi | 75% | 2490 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,885 psi | 83% | 2635 fps | 98.7% |
| Somchem S355 | <<locked>> | 80% | 39,610 psi | 83% | 2592 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 28,979 psi | 61% | 2428 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 80% | 37,681 psi | 79% | 2526 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 33,620 psi | 70% | 2477 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 33,272 psi | 70% | 2480 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 86% | 30,400 psi | 64% | 2470 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,272 psi | 70% | 2454 fps | 97.7% |
| Winchester StaBALL HD | 45.3 gr | 90% | 28,181 psi | 59% | 2474 fps | 95.5% |
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 28 powders for 6.5 x 57 R loaded with the .264 | 123gr | Lapua Scenar. Alliant Reloder-26 delivers the highest muzzle velocity at 2,835 fps; across all powders the maximum-charge window runs from 1,765 fps to 2,835 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 28 of the 28 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 75–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, 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. Alliant Reloder-26, Winchester StaBALL HD, ReloadSwiss RS 70 rank at the top here: for 6.5 x 57 R with the .264 | 123gr | Lapua Scenar 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.