Bullet: 500 gr
Banded Solids
(Barnes)
Diameter: 0.458"
Powder: Reloder 7 (Alliant Powder)
Starting Powder: 54.0 gr
Max Powder: 59.5 gr
Primer: FED 215m
Case: Winchester Western
Trim Length: 2.490"
Cartridge Overall Length: 3.310"
Starting Velocity: 1,919
Starting Pressure:
Max Velocity: 2,067
Max Pressure:
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 12/21/2024: