Load data for .300 Win. Mag. + 190gr Hornady CX
The most recommended powders for this combination are Vihtavuori N555 and ReloadSwiss RS 60.
Based on C.I.P., the max. allowed case length is 2.620 in / 66.55 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.

Based on C.I.P., the max. allowed case length is 2.620 in / 66.55 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.

Load Specifications
ImperialMetric
Bullet:.308 | 190gr | CX
Cartridge:.300 Win. Mag. load data
Case Length (L3):2.620" | 66.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.832" | 21.1 mm
Case Capacity:90.5 gow | 5.86 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):62,366 psi | 4,300 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:9.5
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Community Loads for .300 Win. Mag. + 190gr Hornady CX
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) |
|---|---|---|---|---|---|
| 75.2 gr | 3.490" | 24.0" | 2749 fps | ••• | |
| 60.0 gr | 3.490" | 24.0" | 2616 fps | ••• | |
| 65.1 gr | 3.490" | 24.0" | 2805 fps | ••• | |
| ••• | 3.490" | 24.0" | 2554 fps | ••• | |
| ••• | 3.490" | 24.0" | 2778 fps | ••• | |
| ••• | 3.490" | 24.0" | 2725 fps | ••• | |
| ••• | 3.490" | 24.0" | 3001 fps | ••• | |
| ••• | 3.490" | 24.0" | 2532 fps | ••• | |
| ••• | 3.490" | 24.0" | 2768 fps | ••• | |
| ••• | 3.490" | 24.0" | 2587 fps | ••• | |
| ••• | 3.490" | 24.0" | 2832 fps | ••• | |
| ••• | 3.490" | 24.0" | 2729 fps | ••• | |
| ••• | 3.490" | 24.0" | 2507 fps | ••• | |
| ••• | 3.490" | 24.0" | 2752 fps | ••• | |
| ••• | 3.490" | 24.0" | 2933 fps | ••• | |
| ••• | 3.340" | 24.5" | 2660 fps | ••• | |
| ••• | 3.340" | 24.5" | 2565 fps | ••• | |
| ••• | 3.340" | 24.5" | 2474 fps | ••• | |
| ••• | 3.340" | 24.5" | 2737 fps | ••• | |
| ••• | 3.340" | 24.5" | 2510 fps | ••• | |
| ••• | 3.340" | 24.5" | 2830 fps | ••• | |
| ••• | 3.340" | 24.5" | 2821 fps | ••• | |
| ••• | 3.340" | 24.5" | 2654 fps | ••• | |
| ••• | 3.490" | 24.0" | 2806 fps | ••• | |
| ••• | 3.490" | 24.0" | 3049 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.