Load Data for .280 Ackley Improved


 
Bullet: 168 gr HPBT  (Sierra)
Diameter: 0.284"
 
Powder: IMR 4955 (Improved Military Rifle)
Starting Powder: 55.3 gr
Max Powder: 58.9 gr
 
Primer: WIN WLR
 
Case: NOS
Trim Length: 2.530"
 
Cartridge Overall Length: 3.330"
 
Starting Velocity: 2,601
Starting Pressure: 53,200
Max Velocity: 2,768
Max Pressure: 62,100
 
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/