Bullet: 165 gr
Grand Slam SP
(Speer)
Diameter: 0.308"
Powder: SR 4759 (Improved Military Rifle)
Starting Powder: 25.0 gr
Max Powder: 29.0 gr
Primer: CCI 250 Mag
Case: WIN
Trim Length:
Cartridge Overall Length: 3.290"
Starting Velocity: 1,763
Starting Pressure:
Max Velocity: 2,000
Max Pressure:
Source: https://reloadingdata.speer.com/downloads/speer/reloading-pdfs/rifle/300_Winchester_Magnum_165.pdf
Printed from Shooter's Reference on 11/21/2024: