Load data for .338-378 Weath. Mag. + 300gr Nosler RDF
The most recommended powders for this combination are Hodgdon H4831.
Based on C.I.P., the max. allowed case length is 2.913 in / 73.99 mm, the max. cartridge length is 3.763 in / 95.58 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Based on C.I.P., the max. allowed case length is 2.913 in / 73.99 mm, the max. cartridge length is 3.763 in / 95.58 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Load Specifications
ImperialMetric
Bullet:.338 | 300gr | RDF
Cartridge:.338-378 Weath. Mag. load data
Case Length (L3):2.910" | 73.9 mm
Cartridge Length (COL/L6):•••
Seated Depth:1.037" | 26.3 mm
Case Capacity:137 gow | 8.88 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:26.0" | 660 mm
Min. Twist Rate:1:10.5
Get PRO license to unlock all data and calculators
Community Loads for .338-378 Weath. Mag. + 300gr Nosler RDF
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) |
|---|---|---|---|---|---|
| 95.0 gr | 3.750" | 26.0" | 2626 fps | ••• | |
| 106.0 gr | 3.750" | 26.0" | 2630 fps | ••• | |
| 96.0 gr | 3.750" | 26.0" | 2591 fps | ••• | |
| ••• | 3.750" | 26.0" | 2595 fps | ••• | |
| ••• | 3.750" | 26.0" | 2761 fps | ••• | |
| ••• | 3.750" | 26.0" | 2670 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.