Load Data for .25 WSSM (Winchester Super Short Magnum)


 
Bullet: 120 gr SP  (Swift)
Diameter: 0.257"
 
Powder: IMR 4320 (Improved Military Rifle)
Starting Powder: 36.0 gr
Max Powder: 39.2 gr
 
Primer: WIN WLR
 
Case: WIN
Trim Length: 1.660"
 
Cartridge Overall Length: 2.330"
 
Starting Velocity: 2,667
Starting Pressure: 52,800
Max Velocity: 2,846
Max Pressure: 63,200
 
Barrel: 24" with 1: 10" twist.
 
Source: https://www.hodgdonreloading.com/
 

Printed from Shooter's Reference on 12/21/2024:
https://www.shootersreference.com/reloadingdata/25-wssm-winchester-super-short-magnum/