I have used extensively a CZ 458 Lott from a very good friend of mine, we even took that rifle to Africa. Originally chambered in 458 Win, the rifle is a non-sense hunting machine. Accurate, stout and a pleasure to shoot, especially since it's on the heavy weight.

Integral scope bases helped a lot.

While I have personal preference for the Ruger, I'll no hesitate to have a CZ.