Bullet: 300 gr
JSP
(Speer)
Diameter: 0.451"
Powder: SR 4759 (Improved Military Rifle)
Starting Powder: 20.3 gr
Max Powder: 22.5 gr
Primer: CCI 300
Case: WIN
Trim Length:
Cartridge Overall Length: 1.640"
Starting Velocity: 825
Starting Pressure:
Max Velocity: 1,029
Max Pressure:
DO NOT confuse with SR 4756 or excessive pressure will result. <br />NOTE: Seat bullet to REAR cannelure and use a neckdown crimp.
Source: https://reloadingdata.speer.com/downloads/speer/reloading-pdfs/handgun/45_Colt_Ruger__Contender_Only_300.pdf
Printed from Shooter's Reference on 11/02/2024: