Load data for .45-70 Govt. + 300gr Winchester JHP 45-70
16 suitable loads across 4 powder(s) for cartridge .45-70 Govt. with 300gr Winchester JHP 45-70 bullet.
The most recommended powders for this combination are Vihtavuori N120, ReloadSwiss RS 14 and Hodgdon TrailBoss.
Based on C.I.P., the max. allowed case length is 2.105 in / 53.47 mm, the max. cartridge length is 2.550 in / 64.77 mm, and the max. allowed pressure is 31,908 PSI / 2,200 bar.
Based on C.I.P., the max. allowed case length is 2.105 in / 53.47 mm, the max. cartridge length is 2.550 in / 64.77 mm, and the max. allowed pressure is 31,908 PSI / 2,200 bar.
Load Specifications
ImperialMetric
Bullet:.458 | 300gr | JHP 45-70
Cartridge:.45-70 Govt. load data
Case Length (L3):2.105" | 53.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.560" | 14.2 mm
Case Capacity:79 gow | 5.12 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (C.I.P.):31,908 psi | 2,200 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:Stabilizes in any common twist
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