Load data for .300 HAM'R + 125gr Sierra SPT Pro-Hunter
Based on SAAMI, the max. allowed case length is 1.603 in / 40.72 mm, the max. cartridge length is 2.260 in / 57.40 mm, and the max. allowed pressure is 57,500 PSI / 3,965 bar.
Based on SAAMI, the max. allowed case length is 1.603 in / 40.72 mm, the max. cartridge length is 2.260 in / 57.40 mm, and the max. allowed pressure is 57,500 PSI / 3,965 bar.
Load Specifications
ImperialMetric
Cartridge:.300 HAM'R load data
Case Length (L3):1.615" | 41.0 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.263" | 6.7 mm
Case Capacity:31 gow | 2.01 cm³
Primer Size:Small Rifle (SR)
Max. Pressure (SAAMI):57,500 psi | 3,965 bar
Barrel Length:16.0" | 406 mm
Min. Twist Rate:Stabilizes in any common twist
Get PRO license to unlock all data and calculators
Community Loads for .300 HAM'R + 125gr Sierra SPT Pro-Hunter
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) |
|---|---|---|---|---|---|
| 24.1 gr | 2.220" | 18.0" | 2268 fps | ••• | |
| 24.3 gr | 2.250" | 16.0" | 2210 fps | ••• | |
| 25.0 gr | 2.250" | 16.0" | 2274 fps | ••• | |
| ••• | 2.220" | 18.0" | 2214 fps | ••• | |
| ••• | 2.220" | 18.0" | 2153 fps | ••• | |
| ••• | 2.250" | 16.0" | 2184 fps | ••• | |
| ••• | 2.250" | 16.0" | 2269 fps | ••• | |
| ••• | 2.220" | 18.0" | 2125 fps | ••• | |
| ••• | 2.250" | 16.0" | 2185 fps | ••• | |
| ••• | 2.250" | 16.0" | 2269 fps | ••• | |
| ••• | 2.220" | 18.0" | 2369 fps | ••• | |
| ••• | 2.250" | 16.0" | 2061 fps | ••• | |
| ••• | 2.250" | 16.0" | 2165 fps | ••• | |
| ••• | 2.250" | 16.0" | 2094 fps | ••• | |
| ••• | 2.250" | 16.0" | 2185 fps | ••• | |
| ••• | 2.250" | 16.0" | 2229 fps | ••• | |
| ••• | 2.250" | 16.0" | 2084 fps | ••• | |
| ••• | 2.250" | 16.0" | 2191 fps | ••• | |
| ••• | 2.250" | 16.0" | 2286 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.