See if you can find a Hunter model before getting any other Blackhawk. They have the best mounting system available IMO that can be had on a revolver.

My 7.5" .45LC Hunter shoots a 340gr Penn bullet at 1300+fps. The only thing a .460 or .454 will do better than that is shoot through the animal a little faster.

As for revolver optics...I'm partial to Weaver 2X and 4X scopes. They handle the recoil of my Hunter's just fine.