Load data for .308 Norma Mag. + 180gr Sierra GameKing
Based on C.I.P., the max. allowed case length is 2.559 in / 65.00 mm, the max. cartridge length is 3.346 in / 85.00 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Based on C.I.P., the max. allowed case length is 2.559 in / 65.00 mm, the max. cartridge length is 3.346 in / 85.00 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Load Specifications
ImperialMetric
Bullet:.308 | 180gr | GameKing
Cartridge:.308 Norma Mag. load data
Case Length (L3):2.559" | 65.0 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.558" | 14.2 mm
Case Capacity:86.5 gow | 5.61 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:1:12.5
Get PRO license to unlock all data and calculators
Community Loads for .308 Norma Mag. + 180gr Sierra GameKing
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) |
|---|---|---|---|---|---|
| 62.2 gr | 3.346" | 24.0" | 2813 fps | ••• | |
| 64.4 gr | 3.346" | 24.0" | 2890 fps | ••• | |
| 70.1 gr | 3.346" | 24.0" | 2779 fps | ••• | |
| ••• | 3.346" | 24.0" | 2870 fps | ••• | |
| ••• | 3.346" | 24.0" | 2960 fps | ••• | |
| ••• | 3.346" | 24.0" | 2722 fps | ••• | |
| ••• | 3.346" | 24.0" | 2791 fps | ••• | |
| ••• | 3.346" | 24.0" | 2728 fps | ••• | |
| ••• | 3.346" | 24.0" | 2799 fps | ••• | |
| ••• | 3.346" | 24.0" | 2868 fps | ••• | |
| ••• | 3.346" | 24.0" | 2937 fps | ••• | |
| ••• | 3.346" | 24.0" | 2857 fps | ••• | |
| ••• | 3.346" | 24.0" | 2928 fps | ••• | |
| ••• | 3.346" | 24.0" | 2726 fps | ••• | |
| ••• | 3.346" | 24.0" | 2801 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.