Bullet: 150 gr
Grand Slam SP
(Speer)
Diameter: 0.308"
Powder: IMR 7977 (Improved Military Rifle)
Starting Powder: 79.7 gr
Max Powder: 88.2 gr
Primer: FED 215
Case: FED
Trim Length:
Cartridge Overall Length: 3.490"
Starting Velocity: 2,954
Starting Pressure:
Max Velocity: 3,291
Max Pressure:
Compressed
Source: https://reloadingdata.speer.com/downloads/speer/reloading-pdfs/rifle/300_Weatherby_Magnum_150.pdf
Printed from Shooter's Reference on 12/21/2024: