480 Ruger is a fantastic cartridge

In numerous tests on nasty bovine on the Texas ranches, the 480 has shown itself to perform far beyond it's appearance on paper

Part of what makes it so good, aside the performance on large game animals, is how manageable it is
Also it's able to be built on a relatively compact and lightweight (easily carried) New Model Blackhawk and Bisley

Comparing it to the 454, the 480 does it's thing at 48000 psi, where the Casull runs at 65000 psi
That's a big difference for the shooter