Bullet: 129 gr
BT
(Barnes)
Diameter: 0.277"
Powder: IMR 7977 (Improved Military Rifle)
Starting Powder: 72.0 gr
Max Powder: 76.8 gr
Primer: WIN WLRM
Case: NOS
Trim Length: 2.575"
Cartridge Overall Length: 3.340"
Starting Velocity: 3,152
Starting Pressure: 53,800
Max Velocity: 3,350
Max Pressure: 63,200
Barrel: 24" with 1:10" twist.
Source: https://www.hodgdonreloading.com/
Printed from Shooter's Reference on 01/05/2025: