Load data for .300 HAM'R + 150gr Sierra VarmintKing
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
Bullet:.308 | 150gr | VarmintKing
Cartridge:.300 HAM'R load data
Case Length (L3):1.615" | 41.0 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.260" | 6.6 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
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Community Loads for .300 HAM'R + 150gr Sierra VarmintKing
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) |
|---|---|---|---|---|---|
| 20.2 gr | 2.250" | 16.0" | 1781 fps | ••• | |
| 21.5 gr | 2.250" | 16.0" | 1891 fps | ••• | |
| 22.2 gr | 2.250" | 16.0" | 1949 fps | ••• | |
| ••• | 2.250" | 16.0" | 2145 fps | ••• | |
| ••• | 2.250" | 16.0" | 1914 fps | ••• | |
| ••• | 2.250" | 16.0" | 2000 fps | ••• | |
| ••• | 2.250" | 16.0" | 2043 fps | ••• | |
| ••• | 2.250" | 16.0" | 2086 fps | ••• | |
| ••• | 2.250" | 16.0" | 1910 fps | ••• | |
| ••• | 2.250" | 16.0" | 2005 fps | ••• | |
| ••• | 2.250" | 16.0" | 2046 fps | ••• | |
| ••• | 2.250" | 16.0" | 2104 fps | ••• | |
| ••• | 2.250" | 16.0" | 1831 fps | ••• | |
| ••• | 2.250" | 16.0" | 1926 fps | ••• | |
| ••• | 2.250" | 16.0" | 1968 fps | ••• | |
| ••• | 2.250" | 16.0" | 1959 fps | ••• | |
| ••• | 2.250" | 16.0" | 1984 fps | ••• | |
| ••• | 2.250" | 16.0" | 1840 fps | ••• | |
| ••• | 2.250" | 16.0" | 1923 fps | ••• | |
| ••• | 2.250" | 16.0" | 1962 fps | ••• | |
| ••• | 2.250" | 16.0" | 2025 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.