Load data for .300 Weath. Mag. + 220gr Nosler Partition
The most recommended powders for this combination are Accurate 4350.
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 | 220gr | Partition
Cartridge:.300 Weath. Mag. load data
Case Length (L3):2.824" | 71.7 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.634" | 16.1 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:1:13.0
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Community Loads for .300 Weath. Mag. + 220gr Nosler Partition
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) |
|---|---|---|---|---|---|
| 64.5 gr | 3.560" | 26.0" | 2615 fps | ••• | |
| 66.5 gr | 3.560" | 26.0" | 2676 fps | ••• | |
| 68.5 gr | 3.560" | 26.0" | 2737 fps | ••• | |
| ••• | 3.560" | 26.0" | 2627 fps | ••• | |
| ••• | 3.560" | 26.0" | 2690 fps | ••• | |
| ••• | 3.560" | 26.0" | 2753 fps | ••• | |
| ••• | 3.560" | 26.0" | 2660 fps | ••• | |
| ••• | 3.560" | 26.0" | 2726 fps | ••• | |
| ••• | 3.560" | 26.0" | 2791 fps | ••• | |
| ••• | 3.560" | 26.0" | 2693 fps | ••• | |
| ••• | 3.560" | 26.0" | 2762 fps | ••• | |
| ••• | 3.560" | 26.0" | 2827 fps | ••• | |
| ••• | 3.560" | 26.0" | 2673 fps | ••• | |
| ••• | 3.560" | 26.0" | 2739 fps | ••• | |
| ••• | 3.560" | 26.0" | 2804 fps | ••• | |
| ••• | 3.560" | 26.0" | 2631 fps | ••• | |
| ••• | 3.560" | 26.0" | 2691 fps | ••• | |
| ••• | 3.560" | 26.0" | 2816 fps | ••• | |
| ••• | 3.560" | 26.0" | 2880 fps | ••• | |
| ••• | 3.560" | 26.0" | 2700 fps | ••• | |
| ••• | 3.560" | 26.0" | 2764 fps | ••• | |
| ••• | 3.560" | 26.0" | 2828 fps | ••• | |
| ••• | 3.560" | 26.0" | 2586 fps | ••• | |
| ••• | 3.560" | 26.0" | 2648 fps | ••• | |
| ••• | 3.560" | 26.0" | 2708 fps | ••• | |
| ••• | 3.560" | 26.0" | 2726 fps | ••• | |
| ••• | 3.560" | 26.0" | 2794 fps | ••• | |
| ••• | 3.560" | 26.0" | 2860 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.