Load Data for .300 RUM (Remington Ultra Magnum)


 
Bullet: 190 gr BTSP  (HDY)
Diameter: 0.308"
 
Powder: IMR 7977 (Improved Military Rifle)
Starting Powder: 87.6 gr
Max Powder: 93.2 gr
 
Primer: REM 9½M
 
Case: REM
Trim Length: 2.840"
 
Cartridge Overall Length: 3.555"
 
Starting Velocity: 2,898
Starting Pressure: 51,700
Max Velocity: 3,119
Max Pressure: 62,600
 
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/300-rum-remington-ultra-magnum/