Load data for .300 Win. Mag. + 174gr Sierra MatchKing

501 suitable loads across 86 powder(s) for cartridge .300 Win. Mag. with 174gr Sierra MatchKing bullet.

The most recommended powders for this combination are Alliant Reloder-26, Norma MRP and ReloadSwiss RS 70.

.300 Win. Mag. cartridge with combo bulletSeated DepthL3 = 2.620 in / 66.55 mmL6 = 3.340 in / 84.84 mmSeated Depth = .507 in / 12.88 mm

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.

174gr Sierra MatchKing bullet image

Load Specifications

ImperialMetric
Case Length (L3):2.620" | 66.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.557" | 14.2 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:1:13.5

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