Load Data for .458 Winchester Magnum


 
Bullet: 450 gr TSX  (Barnes)
Diameter: 0.458"
 
Powder: X-Terminator (Ramshot)
Starting Powder: 64.0 gr
Max Powder: 70.0 gr
 
Primer: FED 215m
 
Case: Winchester Western
Trim Length: 2.490"
 
Cartridge Overall Length: 3.340"
 
Starting Velocity: 2,024
Starting Pressure:  
Max Velocity: 2,213
Max Pressure:  
 
Compressed
A slight crimp was used to ensure the bullet neck tension was strong enough to keep the bullet from moving
Barrel: 24" with 1:14" twist.
 
Source: https://www.barnesbullets.com/wp-content/uploads/2021/05/458WinchesterMagnum.pdf
 

Printed from Shooter's Reference on 11/21/2024:
https://www.shootersreference.com/reloadingdata/458-winchester-magnum/