Load Data for .257 Roberts

+P
Bullet: 120 gr Spitzer BTSP  (Speer)
Diameter: 0.257"
 
Powder: Reloder 17 (Alliant Powder)
Starting Powder: 38.5 gr
Max Powder: 42.5 gr
 
Primer: FED 210
 
Case: FED
Trim Length: 2.223"
 
Cartridge Overall Length: 2.770"
 
Starting Velocity: 2,586
Starting Pressure:  
Max Velocity: 2,826
Max Pressure:  
 
 
Source: https://reloadingdata.speer.com/Downloads/speer/ReloadingPdfs/257-roberts-p-with-120-gr-spitzer-btsppdf.pdf
 
Printed from Shooter's Reference on 12/21/2024:
https://www.shootersreference.com/reloadingdata/257-roberts/