+P
Bullet: 120 gr
Spitzer BTSP
(Speer)
Diameter: 0.257"
Powder: H414 (Hodgdon)
Starting Powder: 39.0 gr
Max Powder: 43.0 gr
Primer: CCI 250 Mag
Case: WIN
Trim Length: 2.223"
Cartridge Overall Length: 2.770"
Starting Velocity: 2,507
Starting Pressure:
Max Velocity: 2,767
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: