Load Data for .257 Roberts

 
Bullet: 100 gr BTSP  (Speer)
Diameter: 
 
Powder: 2000-MR (Alliant Powder)
Starting Powder: 37.4 gr
Max Powder: 41.5 gr
 
Primer: FED 210
 
Case: FED
Trim Length:  
 
Cartridge Overall Length: 2.780"
 
Starting Velocity:  
Starting Pressure:  
Max Velocity: 3,055
Max Pressure:  
 
Barrel: 24" with None twist.
 
Source: https://www.alliantpowder.com/reloaders/recipedetail.aspx?gtypeid=2&weight=100&shellid=54&bulletid=106
 
Printed from Shooter's Reference on 05/03/2024:
https://www.shootersreference.com/reloadingdata/257-roberts/