Based on the .45-70 case, this proprietary cartridge is made popular because of its big power but manageable recoil.
Store Rifle, Handgun, and Pistol Brass
Starline Brass 480 Ruger Bag of 100 (Bulk Packaged)
RELOADING - BRASS - Page 7 - Shooting Surplus
Starline Brass .480 Ruger Unprimed Brass Large Cartridge Case, 50
Starline Brass .480 Ruger Unprimed Brass Large Cartridge Case, 50
Hornady Brass 480 Ruger Box of 100
RELOADING - BRASS - Page 7 - Shooting Surplus
Starline .480 Ruger Unprimed Brass Cases 50 Count 480REUP-50 [FC
Store Rifle, Handgun, and Pistol Brass
Starline Brass Star480REUP5 Unprimed Cases 480 Ruger 50/Pack
Starline Brass STAR50BEOEUP Handgun 50 Beowulf Brass 50 Per Bag