Yes, but barely. I prefer the .475 Linebaugh with 400-420 gr. bullets for large bears, bison, even bull elk, and would select it for Shiras moose, over the .454. But that's a personal preference.
No, I don't have them hosted anywhere, although many have been published in The Sixgunner, One Good Shot, Safari, The Five Shot Journal, and John T. used one for an article in Guns.