Load Data for .300 Winchester Magnum


 
Bullet: 212 gr LRX  (Barnes)
Diameter: 0.308"
 
Powder: IMR 7977 (Improved Military Rifle)
Starting Powder: 68.7 gr
Max Powder: 73.8 gr
 
Primer: REM 9½M
 
Case: REM
Trim Length: 2.610"
 
Cartridge Overall Length: 3.975"
 
Starting Velocity: 2,564
Starting Pressure:  
Max Velocity: 2,782
Max Pressure:  
 
212gr LRX BT requires 1:8" twist or faster
Barrel: 24" with 1:8" twist.
 
Source: https://www.barnesbullets.com/wp-content/uploads/2021/05/300-Win-Mag.pdf
 

Printed from Shooter's Reference on 12/21/2024:
https://www.shootersreference.com/reloadingdata/300-winchester-magnum/