I've used Hornady 195gr or Nosler 200gr AccuBonds for some years now in both my 8X57 Husqvarnas and my Kimber MT 325 and had good results from either.
In my 8X57 I usually load 51gr IMR 4350 and the Nosler AB. It would be a great elk-whacker. I DON'T RECOMMEND ANY LOADS! Work yours up safely.
IMR 4064 is also a great powder for the 8X57, IMO. I'm sure some of the newer powders are better, but I'm well stocked with the old standards.