Load data for .30-378 Weath. Mag. + 166gr Hammer Stone Hammer
340 suitable loads across 56 powder(s) for cartridge .30-378 Weath. Mag. with 166gr Hammer Stone Hammer bullet.
The most recommended powders for this combination are Hodgdon Retumbo, ReloadSwiss RS 80 and Vihtavuori N570.
Based on C.I.P., the max. allowed case length is 2.913 in / 73.99 mm, the max. cartridge length is 3.750 in / 95.25 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Based on C.I.P., the max. allowed case length is 2.913 in / 73.99 mm, the max. cartridge length is 3.750 in / 95.25 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Load Specifications
ImperialMetric
Bullet:.308 | 166gr | Stone Hammer
Cartridge:.30-378 Weath. Mag. load data
Case Length (L3):2.913" | 74.0 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.578" | 14.7 mm
Case Capacity:133 gow | 8.62 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:26.0" | 660 mm
Min. Twist Rate:1:12.5
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