Load Data for .257 Roberts


 
Bullet: 100 gr HP  (Speer)
Diameter: 
 
Powder: Reloder 16 (Alliant Powder)
Starting Powder: 40.3 gr
Max Powder: 44.8 gr
 
Primer: FED 210
 
Case: FED
Trim Length:  
 
Cartridge Overall Length: 2.760"
 
Starting Velocity:  
Starting Pressure:  
Max Velocity: 3,046
Max Pressure:  
 
Barrel: 24" with None twist.
 
Source: https://www.alliantpowder.com/reloaders/recipedetail.aspx?gtypeid=2&weight=100&shellid=54&bulletid=119
 

Printed from Shooter's Reference on 11/21/2024:
https://www.shootersreference.com/reloadingdata/257-roberts/