Load Data for .338 Winchester Magnum


 
Bullet: 300 gr HPBT  (Sierra)
Diameter: 0.338"
 
Powder: IMR 4955 (Improved Military Rifle)
Starting Powder: 59.3 gr
Max Powder: 64.2 gr
 
Primer: WIN WLRM
 
Case: WIN
Trim Length: 2.490"
 
Cartridge Overall Length: 3.340"
 
Starting Velocity: 2,223
Starting Pressure: 53,200
Max Velocity: 2,387
Max Pressure: 62,600
 
Compressed
Barrel: 24" with 1:10" twist.
 
Source: https://www.hodgdonreloading.com/
 

Printed from Shooter's Reference on 04/27/2024:
https://www.shootersreference.com/reloadingdata/338-winchester-magnum/