Bullet: 150 gr
Spitzer BTSP
(Speer)
Diameter: 0.308"
Powder: Reloder 19 (Alliant Powder)
Starting Powder: 74.0 gr
Max Powder: 78.0 gr
Primer: CCI 250 Mag
Case: WIN
Trim Length:
Cartridge Overall Length: 3.330"
Starting Velocity: 3,086
Starting Pressure:
Max Velocity: 3,301
Max Pressure:
Compressed
Source: https://reloadingdata.speer.com/downloads/speer/reloading-pdfs/rifle/300_Winchester_Magnum_150.pdf
Printed from Shooter's Reference on 05/02/2024: