Bullet: 55 gr
Spitzer SP
(Speer)
Diameter: 0.224"
Powder: IMR 4166 (Improved Military Rifle)
Starting Powder: 37.3 gr
Max Powder: 41.4 gr
Primer: FED 210
Case: WIN
Trim Length: 1.660"
Cartridge Overall Length: 2.210"
Starting Velocity: 3,503
Starting Pressure:
Max Velocity: 3,820
Max Pressure:
Source: https://reloadingdata.speer.com/Downloads/speer/ReloadingPdfs/223-winchester-super-short-magnum-with-55-gr-spitzer-sppdf.pdf
Printed from Shooter's Reference on 12/21/2024: