Bullet: 150 gr
Grand Slam SP/CANN
(Speer)
Diameter: 0.308"
Powder: Reloder 19 (Alliant Powder)
Starting Powder: 101.0 gr
Max Powder: 105.0 gr
Primer: CCI 250 Mag
Case: Weatherby
Trim Length:
Cartridge Overall Length: 3.645"
Starting Velocity: 3,308
Starting Pressure:
Max Velocity: 3,404
Max Pressure:
Source: https://reloadingdata.speer.com/downloads/speer/reloading-pdfs/rifle/30-378_Weatherby_Magnum_150.pdf
Printed from Shooter's Reference on 05/05/2024: