Load Data for .338 - 378 Weatherby Magnum


 
Bullet: 185 gr TSX  (Barnes)
Diameter: 0.338"
 
Powder: Supreme 780 (Winchester)
Starting Powder: 108.6 gr
Max Powder: 115.5 gr
 
Primer: FED 215m
 
Case: Weatherby
Trim Length: 2.903"
 
Cartridge Overall Length: 3.700"
 
Starting Velocity: 3,402
Starting Pressure: 47,600
Max Velocity: 3,577
Max Pressure: 52,000 CUP
 
Barrel: 26" with 1:10" twist.
 
Source: https://www.hodgdonreloading.com/
 

Printed from Shooter's Reference on 05/07/2024:
https://www.shootersreference.com/reloadingdata/338-378-weatherby-magnum/