Load data for .338 Weatherby RPM + 128gr Hammer Stone Hammer
Based on SAAMI, the max. allowed case length is 2.550 in / 64.77 mm, the max. cartridge length is 3.380 in / 85.85 mm, and the max. allowed pressure is 65,000 PSI / 4,482 bar.
Based on SAAMI, the max. allowed case length is 2.550 in / 64.77 mm, the max. cartridge length is 3.380 in / 85.85 mm, and the max. allowed pressure is 65,000 PSI / 4,482 bar.
Load Specifications
ImperialMetric
Bullet:.338 | 128gr | Stone Hammer
Cartridge:.338 Weatherby RPM load data
Case Length (L3):2.550" | 64.8 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.456" | 11.6 mm
Case Capacity:81.6 gow | 5.29 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (SAAMI):65,000 psi | 4,482 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:Stabilizes in any common twist
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Community Loads for .338 Weatherby RPM + 128gr Hammer Stone Hammer
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) |
|---|---|---|---|---|---|
| 67.5 gr | 3.120" | 18.0" | 3100 fps | ••• | |
| 59.6 gr | 3.000" | 20.0" | 3005 fps | ••• | |
| 60.6 gr | 3.050" | 20.0" | 3025 fps | ••• | |
| ••• | 3.082" | 20.0" | 3038 fps | ••• | |
| ••• | 3.100" | 20.0" | 3045 fps | ••• | |
| ••• | 3.150" | 20.0" | 3061 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.