RE: Ok, got the model of gun now which caliber?
If you really want a 300mag with more power than the 300win mag skip the weatherby and go directly to the 300ultramag.I have owned a 300wby and currently own two 300ultramags.The ultramag produces over 100fps more than the wby and brass and components are reasonably priced and easy to get.The ultramag is also chambered in several different rifles so you should be able to get one in a rifle that suits you.