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

405 suitable loads across 69 powder(s) for cartridge .300 Rem. Ultra Mag. with 180gr Sierra HP MatchKing bullet.

The most recommended powders for this combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Vihtavuori N560.

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 64,977 PSI / 4,480 bar.

Load Specifications

ImperialMetric

Bullet:.308 | 180gr | HP MatchKing

Cartridge:.300 Rem. Ultra Mag. load data

Case Length (L3):2.850" | 72.4 mm

Cartridge Length (COL/L6):•••

Seated Depth:0.586" | 14.9 mm

Case Capacity:112.5 gow | 7.29 cm³

Primer Size:Large Rifle Magnum (LRM)

Max. Pressure (C.I.P.):64,977 psi | 4,480 bar

Barrel Length:24.0" | 610 mm

Min. Twist Rate:1:13.0

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Community Loads for .300 Rem. Ultra 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.

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

	84.0 gr	3.598"	21.7"	2766 fps	•••

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