Load data for .300 Lapua Mag. + 150gr Hornady ECX

510 suitable loads across 83 powder(s) for cartridge .300 Lapua Mag. with 150gr Hornady ECX bullet.

The most recommended powders for this combination are Norma MRP, Alliant Reloder-26 and Accurate High Country.

.300 Lapua Mag. cartridge with combo bulletSeated DepthL3 = 2.724 in / 69.19 mmL6 = 3.680 in / 93.47 mmSeated Depth = .237 in / 6.02 mm

Based on C.I.P., the max. allowed case length is 2.724 in / 69.20 mm, the max. cartridge length is 3.720 in / 94.50 mm, and the max. allowed pressure is 60,916 PSI / 4,200 bar.

150gr Hornady ECX bullet image

Load Specifications

ImperialMetric
Case Length (L3):2.724" | 69.2 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.308" | 7.8 mm
Case Capacity:100 gow | 6.48 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):60,916 psi | 4,200 bar
Barrel Length:26.0" | 660 mm
Min. Twist Rate:1:13.0

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