If you really don't like the 30-06 why not re barrel for the .338-06. You get a heavier bullet without the sinus clearing recoil and more thump on the target, win win. Personally I would just up it to 8MM-06 for the accuracy advantage but that's just my druthers.
Or you could go WSM or WSSM with less work involved in the rebuild and still get your magnum load.
Or you could go WSM or WSSM with less work involved in the rebuild and still get your magnum load.