Load data for .300 Win. Mag. + 180gr Sierra HP MatchKing

498 suitable loads across 84 powder(s) for cartridge .300 Win. Mag. with 180gr Sierra HP MatchKing bullet.

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

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 | 180gr | HP MatchKing

Cartridge:.300 Win. Mag. load data

Case Length (L3):2.620" | 66.5 mm

Cartridge Length (COL/L6):•••

Seated Depth:0.610" | 15.5 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:1:13.0

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Community Loads for .300 Win. Mag. + 180gr Sierra HP MatchKing

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)

68.5 gr	3.340"	24.0"	2646 fps	•••
76.4 gr	3.340"	24.0"	2959 fps	•••

70.3 gr	3.340"	24.0"	2559 fps	•••
•••	3.340"	24.0"	2778 fps	•••

•••	3.340"	24.0"	2649 fps	•••

•••	3.340"	24.0"	2916 fps	•••

•••	3.340"	24.0"	2840 fps	•••

•••	3.340"	24.0"	2653 fps	•••
•••	3.340"	24.0"	2723 fps	•••

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