Ruger has announced availability of their Super Redhawk in a new caliber, the .480 Ruger. Ruger's latest catalog claims it has about a third more energy than a .44 magnum. Any word on ballistics, availability of factory ammo, or whether or not it's really better than the .454, other than the "mine's bigger than yours" factor? (And is it really new, or did they just rip-off Linebaugh's .475?)