Bullet: 150 gr
Grand Slam SP
(Speer)
Diameter: 0.308"
Powder: 760 (Winchester)
Starting Powder: 73.0 gr
Max Powder: 77.0 gr
Primer: CCI 250 Mag
Case: REM
Trim Length:
Cartridge Overall Length: 3.490"
Starting Velocity: 2,985
Starting Pressure:
Max Velocity: 3,067
Max Pressure:
Source: https://reloadingdata.speer.com/downloads/speer/reloading-pdfs/rifle/300_Weatherby_Magnum_150.pdf
Printed from Shooter's Reference on 12/21/2024: