Load Data for .280 Ackley Improved


 
Bullet: 175 gr SP  (Swift)
Diameter: 0.284"
 
Powder: IMR 4955 (Improved Military Rifle)
Starting Powder: 54.9 gr
Max Powder: 58.5 gr
 
Primer: WIN WLR
 
Case: NOS
Trim Length: 2.530"
 
Cartridge Overall Length: 3.270"
 
Starting Velocity: 2,519
Starting Pressure: 53,400
Max Velocity: 2,656
Max Pressure: 62,000
 
Compressed
Barrel: 24" with 1:9" twist.
 
Source: https://www.hodgdonreloading.com/
 

Printed from Shooter's Reference on 05/04/2024:
https://www.shootersreference.com/reloadingdata/280-ackley-improved/