Load Data for .257 Roberts


 
Bullet: 80 gr TTSX BT  (Barnes)
Diameter: 0.257"
 
Powder: 760 (Winchester)
Starting Powder: 43.0 gr
Max Powder: 48.0 gr
 
Primer: REM 9½
 
Case: REM
Trim Length: 2.223"
 
Cartridge Overall Length: 2.780"
 
Starting Velocity: 3,047
Starting Pressure: 37,300
Max Velocity: 3,377
Max Pressure: 45,000 CUP
 
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/