Load Specifications
Load data in caliber 6.5 x 52 R with .257 | 92gr | Reichenberg Spezial Jagd bullet and 7 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate 2495, ReloadSwiss RS 14 and Hodgdon TrailBoss.
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 2015 | <<locked>> | 84% | 31,096 psi | 88% | 2425 fps | 96.6% |
| Accurate 2495 | <<locked>> | 92% | 29,979 psi | 84% | 2477 fps | 96.7% |
| Alliant AR-Comp | <<locked>> | 86% | 30,719 psi | 86% | 2497 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,937 psi | 90% | 1690 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,865 psi | 90% | 1729 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 31,981 psi | 90% | 2415 fps | 96.7% |
| Vihtavuori N135 | <<locked>> | 92% | 32,024 psi | 90% | 2503 fps | 97.1% |
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 2015 | <<locked>> | 80% | 27,427 psi | 77% | 2326 fps | 95% |
| Accurate 2495 | 24.9 gr | 88% | 26,324 psi | 74% | 2379 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 25,396 psi | 71% | 2336 fps | 96.7% |
| Hodgdon TrailBoss | 7.8 gr | 80% | 23,699 psi | 67% | 1512 fps | 100% |
| ReloadSwiss RS 14 | 7.9 gr | 80% | 23,366 psi | 66% | 1542 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 28,311 psi | 80% | 2320 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 88% | 28,282 psi | 80% | 2405 fps | 95.6% |
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 7 powders for 6.5 x 52 R loaded with the .257 | 92gr | Reichenberg Spezial Jagd. Vihtavuori N135 delivers the highest muzzle velocity at 2,503 fps; across all powders the maximum-charge window runs from 1,690 fps to 2,503 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 7 of the 7 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (245 MPa), the top charges use 84–90 %, leaving at least 10 % headroom. The 92.0 gr projectile in 0.257" calls for a 1:13.0 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. Accurate 2495, ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for 6.5 x 52 R with the .257 | 92gr | Reichenberg Spezial Jagd 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.