Load Data for .257 Roberts


 
Bullet: 100 gr BT  (NOS)
Diameter: 0.257"
 
Powder: 4064 (Accurate)
Starting Powder: 36.0 gr
Max Powder: 40.0 gr
 
Primer: FED 210
 
Case: REM
Trim Length: 2.223"
 
Cartridge Overall Length: 2.775"
 
Starting Velocity: 2,594
Starting Pressure: 45,700
Max Velocity: 2,948
Max Pressure: 50,800
 
Barrel: 24" with 1:10" twist.
 
Source: https://www.hodgdonreloading.com/
 

Printed from Shooter's Reference on 11/23/2024:
https://www.shootersreference.com/reloadingdata/257-roberts/