I have had my Weatherby Mark V Stainless in .338 Win Mag with a Leupold Vari-X III 4.5-14X for more than 10 years now. It has never once failed me at the range or in the field. I've taken a number of animals with with and each time the bullet went where I wanted it to.

I'm not an expert gunsmith and can't talk specifics/virtures of one action over the other, but I can say that I am very happy with how this particular rifle has served me over the years.

My friend has the same rifle in .375 H&H and loves it.

Take it for what's it's worth, but I'm sure other people have gotten similar (and better) results with a rifle that costs less.