Load data for .30-378 Weath. Mag. + 180gr Sierra GameKing

294 suitable loads across 56 powder(s) for cartridge .30-378 Weath. Mag. with 180gr Sierra GameKing bullet.

The most recommended powders for this combination are ADI AR 2218, Vihtavuori N570 and Hodgdon Retumbo.

Based on C.I.P., the max. allowed case length is 2.913 in / 73.99 mm, the max. cartridge length is 3.750 in / 95.25 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 3.750 in / 95.25 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Load Specifications

ImperialMetric

Bullet:.308 | 180gr | GameKing

Cartridge:.30-378 Weath. Mag. load data

Case Length (L3):2.913" | 74.0 mm

Cartridge Length (COL/L6):•••

Seated Depth:0.601" | 15.3 mm

Case Capacity:133 gow | 8.62 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:1:12.5

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Community Loads for .30-378 Weath. Mag. + 180gr Sierra GameKing

Real loads for this combination shared by our community. Charge weights are only fully visible with an active Pro licence.

Charge (gr)	C.O.L.	Barrel Length	Velocity (fps)	Pressure (psi)

109.4 gr	3.655"	26.0"	2997 fps	•••
112.2 gr	3.655"	26.0"	3075 fps	•••
115.0 gr	3.655"	26.0"	3156 fps	•••

Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.