Load Data for .300 Winchester Magnum


 
Bullet: 150 gr MPG  (Barnes)
Diameter: 0.308"
 
Powder: Supreme 780 (Winchester)
Starting Powder: 74.6 gr
Max Powder: 82.0 gr
 
Primer: REM 9½M
 
Case: REM
Trim Length: 2.610"
 
Cartridge Overall Length: 3.340"
 
Starting Velocity: 3,061
Starting Pressure:  
Max Velocity: 3,371
Max Pressure:  
 
Compressed
Barrel: 24" with 1:10" twist.
 
Source: https://www.barnesbullets.com/wp-content/uploads/2021/05/300-Win-Mag.pdf
 

Printed from Shooter's Reference on 11/21/2024:
https://www.shootersreference.com/reloadingdata/300-winchester-magnum/