Bullet: 158 gr
Lead
LSWC/HP
Diameter:
Powder: N320 (VihtaVuori)
Starting Powder: 3.3 gr
Max Powder: 3.8 gr
Primer: Small Pistol
Case: REM
Trim Length: 1.146"
Cartridge Overall Length: 1.437"
Starting Velocity: 755
Starting Pressure:
Max Velocity: 840
Max Pressure:
Barrel: 5" with 1 in 18" twist.
Source: https://www.vihtavuori.com/reloading-data/cowboy-action-reloading/?cartridge=40
Printed from Shooter's Reference on 12/21/2024: