Bullet: 140 gr
SP
(Swift)
Diameter: 0.277"
Powder: IMR 4320 (Improved Military Rifle)
Starting Powder: 41.5 gr
Max Powder: 44.5 gr
Primer: WIN WLR
Case: WIN
Trim Length: 2.530"
Cartridge Overall Length: 3.280"
Starting Velocity: 2,614
Starting Pressure: 42,700
Max Velocity: 2,775
Max Pressure: 50,000 CUP
Barrel: 24" with 1:10" twist.
Source: https://www.hodgdonreloading.com/
Printed from Shooter's Reference on 01/21/2025: