Load data for .300 Lapua Mag. + 155gr Atomic 29 HP
507 suitable loads across 79 powder(s) for cartridge .300 Lapua Mag. with 155gr Atomic 29 HP bullet.
The most recommended powders for this combination are Alliant Reloder-26, Accurate High Country and Norma MRP.
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.
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.
Load Specifications
ImperialMetric
Bullet:.308 | 155gr | HP
Cartridge:.300 Lapua Mag. load data
Case Length (L3):2.724" | 69.2 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.331" | 8.4 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:1:12.5
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