Load data for .270 WSM + 180gr Barnes RNSP
313 suitable loads across 53 powder(s) for cartridge .270 WSM with 180gr Barnes RNSP 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 2.100 in / 53.34 mm, the max. cartridge length is 2.860 in / 72.64 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Based on C.I.P., the max. allowed case length is 2.100 in / 53.34 mm, the max. cartridge length is 2.860 in / 72.64 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.
Load Specifications
ImperialMetric
Bullet:.277 | 180gr | RNSP
Cartridge:.270 WSM load data
Case Length (L3):2.090" | 53.1 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.563" | 14.3 mm
Case Capacity:79.5 gow | 5.15 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:11.5
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