Load data for .338 Lapua Mag. Ackley Improved + 250gr Sierra MatchKing
470 suitable loads across 79 powder(s) for cartridge .338 Lapua Mag. Ackley Improved with 250gr Sierra MatchKing bullet.
The most recommended powders for this combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Vihtavuori N560.
Based on Wildcat, the max. allowed case length is 2.724 in / 69.20 mm, the max. cartridge length is 3.681 in / 93.50 mm, and the max. allowed pressure is 69,618 PSI / 4,800 bar.
Based on Wildcat, the max. allowed case length is 2.724 in / 69.20 mm, the max. cartridge length is 3.681 in / 93.50 mm, and the max. allowed pressure is 69,618 PSI / 4,800 bar.
Load Specifications
ImperialMetric
Bullet:.338 | 250gr | MatchKing
Case Length (L3):2.724" | 69.2 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.588" | 14.9 mm
Case Capacity:124.89 gow | 8.09 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (Wildcat):69,618 psi | 4,800 bar
Barrel Length:27.0" | 686 mm
Min. Twist Rate:1:12.5
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