Load data for .300 Weath. Mag. + 150gr Speer Boat-Tail
Based on C.I.P., the max. allowed case length is 2.825 in / 71.75 mm, the max. cartridge length is 3.560 in / 90.42 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Based on C.I.P., the max. allowed case length is 2.825 in / 71.75 mm, the max. cartridge length is 3.560 in / 90.42 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Load Specifications
ImperialMetric
Bullet:.308 | 150gr | Boat-Tail
Cartridge:.300 Weath. Mag. load data
Case Length (L3):2.824" | 71.7 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.343" | 8.7 mm
Case Capacity:98.9 gow | 6.41 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:15.0
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Community Loads for .300 Weath. Mag. + 150gr Speer Boat-Tail
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) |
|---|---|---|---|---|---|
| 78.0 gr | 3.560" | — | 2871 fps | ••• | |
| 82.0 gr | 3.560" | — | 3015 fps | ••• | |
| 72.5 gr | 3.560" | — | 2976 fps | ••• | |
| ••• | 3.560" | — | 3124 fps | ••• | |
| ••• | 3.560" | — | 3053 fps | ••• | |
| ••• | 3.560" | — | 3198 fps | ••• | |
| ••• | 3.560" | — | 3059 fps | ••• | |
| ••• | 3.560" | — | 3212 fps | ••• | |
| ••• | 3.560" | — | 2839 fps | ••• | |
| ••• | 3.560" | — | 3132 fps | ••• | |
| ••• | 3.560" | — | 2813 fps | ••• | |
| ••• | 3.560" | — | 2786 fps | ••• | |
| ••• | 3.560" | — | 2965 fps | ••• | |
| ••• | 3.560" | — | 3022 fps | ••• | |
| ••• | 3.560" | — | 3182 fps | ••• | |
| ••• | 3.560" | — | 2975 fps | ••• | |
| ••• | 3.560" | — | 3123 fps | ••• | |
| ••• | 3.560" | — | 3076 fps | ••• | |
| ••• | 3.560" | — | 3219 fps | ••• | |
| ••• | 3.560" | — | 2956 fps | ••• | |
| ••• | 3.560" | — | 3108 fps | ••• | |
| ••• | 3.560" | — | 2937 fps | ••• | |
| ••• | 3.560" | — | 3076 fps | ••• | |
| ••• | 3.560" | — | 3057 fps | ••• | |
| ••• | 3.560" | — | 3193 fps | ••• | |
| ••• | 3.560" | — | 2757 fps | ••• | |
| ••• | 3.560" | — | 3063 fps | ••• | |
| ••• | 3.560" | — | 3085 fps | ••• | |
| ••• | 3.560" | — | 3219 fps | ••• | |
| ••• | 3.560" | — | 3079 fps | ••• | |
| ••• | 3.560" | — | 3222 fps | ••• | |
| ••• | 3.560" | — | 2975 fps | ••• | |
| ••• | 3.560" | — | 3123 fps | ••• | |
| ••• | 3.560" | — | 2981 fps | ••• | |
| ••• | 3.560" | — | 3253 fps | ••• | |
| ••• | 3.560" | — | 3007 fps | ••• | |
| ••• | 3.560" | — | 3165 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.