Load Data for .550 Magnum


 
Bullet: 700 gr PHJ  (Alaska Bullet Company)
Diameter: 0.550"
 
Powder: TAC (Ramshot)
Starting Powder: 107.1 gr
Max Powder: 119.0 gr
 
Primer: WIN WLRM
 
Case: Jamison Brass & Ammunition
Trim Length: 2.990"
 
Cartridge Overall Length: 3.780"
 
Starting Velocity: 2,051
Starting Pressure: 55,500
Max Velocity: 2,279
Max Pressure: 61,600
 
Barrel: 24" with 1:18" twist.
 
Source: https://www.hodgdonreloading.com/
 

Printed from Shooter's Reference on 08/11/2025:
https://www.shootersreference.com/reloadingdata/550-magnum/