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Load data for .300 H&H Mag. + 150gr Sierra GameKing

573 suitable loads across 102 powder(s) for cartridge .300 H&H Mag. with 150gr Sierra GameKing bullet.

The most recommended powders for this combination are ReloadSwiss RS 70, ReloadSwiss RS 60 and Alliant Reloder-17.

.300 H&H Mag. cartridge with combo bulletSeated DepthL3 = 2.850 in / 72.39 mmL6 = 3.600 in / 91.44 mmSeated Depth = .360 in / 9.14 mm

Based on C.I.P., the max. allowed case length is 2.850 in / 72.39 mm, the max. cartridge length is 3.600 in / 91.44 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.

150gr Sierra GameKing bullet image

Load Specifications

ImperialMetric
Bullet:.308 | 150gr | GameKing
Cartridge:.300 H&H Mag. load data
Case Length (L3):2.850" | 72.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.438" | 11.1 mm
Case Capacity:85.9 gow | 5.57 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:1:14.5

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Community Loads for .300 H&H Mag. + 150gr Sierra GameKing

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

PowderCharge (gr)C.O.L.Barrel LengthVelocity (fps)Pressure (psi)

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