Load Data for .257 Roberts


 
Bullet: 87 gr SP  (HDY)
Diameter: 
 
Powder: 2000-MR (Alliant Powder)
Starting Powder: 39.3 gr
Max Powder: 43.7 gr
 
Primer: FED 210
 
Case: FED
Trim Length:  
 
Cartridge Overall Length: 2.780"
 
Starting Velocity:  
Starting Pressure:  
Max Velocity: 3,287
Max Pressure:  
 
Barrel: 24" with None twist.
 
Source: https://www.alliantpowder.com/reloaders/recipedetail.aspx?gtypeid=2&weight=87&shellid=54&bulletid=242
 

Printed from Shooter's Reference on 12/21/2024:
https://www.shootersreference.com/reloadingdata/257-roberts/