Load data for .338 Lapua Mag. Ackley Improved + 225gr Hornady SST InterLock

The most recommended powders for this combination are Hodgdon Retumbo, ReloadSwiss RS 76 and IMR 7828 SSC.

.338 Lapua Mag. Ackley Improved cartridge with combo bulletSeated DepthL3 = 2.724 in / 69.19 mmL6 = 3.975 in / 100.97 mmSeated Depth = .204 in / 5.18 mm

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.

225gr Hornady SST InterLock bullet image

Load Specifications

ImperialMetric
Case Length (L3):2.724" | 69.2 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.514" | 13.1 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:1:13.0

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