Load data for 6.5 x 57 R + 129gr Hornady SST
The most recommended powders for this combination are Alliant Reloder-26, Winchester StaBALL HD and Alliant Reloder-23.
Based on C.I.P., the max. allowed case length is 2.232 in / 56.70 mm, the max. cartridge length is 3.228 in / 82.00 mm, and the max. allowed pressure is 47,863 PSI / 3,300 bar.

Based on C.I.P., the max. allowed case length is 2.232 in / 56.70 mm, the max. cartridge length is 3.228 in / 82.00 mm, and the max. allowed pressure is 47,863 PSI / 3,300 bar.

Load Specifications
ImperialMetric
Bullet:.264 | 129gr | SST
Cartridge:6.5 x 57 R load data
Case Length (L3):2.232" | 56.7 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.637" | 16.2 mm
Case Capacity:59 gow | 3.82 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (C.I.P.):47,863 psi | 3,300 bar
Barrel Length:23.6" | 600 mm
Min. Twist Rate:1:8.5
Get PRO license to unlock all data and calculators
Community Loads for 6.5 x 57 R + 129gr Hornady SST
Real loads for this combination shared by our community. Charge weights are only fully visible with an active Pro licence.
| Powder | Charge (gr) | C.O.L. | Barrel Length | Velocity (fps) | Pressure (psi) |
|---|---|---|---|---|---|
| 42.2 gr | 2.953" | 23.6" | 2576 fps | ••• | |
| 42.0 gr | 2.953" | 23.6" | 2542 fps | ••• | |
| 45.5 gr | 2.953" | 23.6" | 2738 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.