Load Data for .458 Winchester Magnum


 
Bullet: 300 gr LFP  (Meister)
Diameter: 0.458"
 
Powder: Trail Boss (Hodgdon)
Starting Powder: 19.0 gr
Max Powder: 23.0 gr
 
Primer: CCI 250 Mag
 
Case: WIN
Trim Length: 2.490"
 
Cartridge Overall Length: 2.885"
 
Starting Velocity: 1,187
Starting Pressure: 10,800
Max Velocity: 1,282
Max Pressure: 13,200 CUP
 
Barrel: 24" with 1:14" twist.
 
Source: https://www.hodgdonreloading.com/
 

Printed from Shooter's Reference on 12/21/2024:
https://www.shootersreference.com/reloadingdata/458-winchester-magnum/