Load Data for .300 Winchester Magnum


 
Bullet: 180 gr MT-SP  (Speer)
Diameter: 0.308"
 
Powder: IMR 4955 (Improved Military Rifle)
Starting Powder: 67.8 gr
Max Powder: 73.7 gr
 
Primer: WIN WLRM
 
Case: WIN
Trim Length: 2.610"
 
Cartridge Overall Length: 3.285"
 
Starting Velocity: 2,744
Starting Pressure: 50,900
Max Velocity: 2,984
Max Pressure: 62,900
 
Barrel: 24" with 1:10" twist.
 
Source: https://www.hodgdonreloading.com/
 

Printed from Shooter's Reference on 12/30/2024:
https://www.shootersreference.com/reloadingdata/300-winchester-magnum/