Bullet: 350 gr
SPFN Hot-Cor
(Speer)
Diameter: 0.458"
Powder: IMR 4166 (Improved Military Rifle)
Starting Powder: 78.5 gr
Max Powder: 80.9 gr
Primer: CCI 250 Mag
Case: FED
Trim Length: 2.490"
Cartridge Overall Length: 3.105"
Starting Velocity: 2,375
Starting Pressure:
Max Velocity: 2,445
Max Pressure:
Compressed
Source: https://reloadingdata.speer.com/Downloads/speer/ReloadingPdfs/458-winchester-magnum-with-350-gr-spfn-hot-corpdf.pdf
Printed from Shooter's Reference on 05/20/2024: