Load Data for .257 Weatherby Magnum


 
Bullet: 120 gr GS  (Speer)
Diameter: 0.257"
 
Powder: H50BMG (Hodgdon)
Starting Powder: 68.9 gr
Max Powder: 76.5 gr
 
Primer: FED 215
 
Case: Weatherby
Trim Length: 2.535"
 
Cartridge Overall Length: 3.130"
 
Starting Velocity: 2,857
Starting Pressure: 49,000
Max Velocity: 3,140
Max Pressure: 60,000
 
Compressed
Barrel: 26" with 1:10" twist.
 
Source: https://www.hodgdonreloading.com/
 

Printed from Shooter's Reference on 07/21/2025:
https://www.shootersreference.com/reloadingdata/257-weatherby-magnum/