Bullet: 170 gr
JHC
(Sierra)
Diameter: 0.357"
Powder: AutoComp (Winchester)
Starting Powder: 4.3 gr
Max Powder: 4.8 gr
Primer: WIN WSP
Case: WIN
Trim Length: 1.145"
Cartridge Overall Length: 1.450"
Starting Velocity: 736
Starting Pressure: 14,300
Max Velocity: 820
Max Pressure: 16,000
Barrel: 7.7" with 1:18.75" twist.
Source: https://www.hodgdonreloading.com/
Printed from Shooter's Reference on 10/30/2025: