Forget both of them and buy a .444 Marlin.

It gives you the best of both worlds. A big heavy bullet and all the trajectory you need to hunt any animal this country can throw at you out to atleast 200 yards.

Remingtons 240 grain factory loads are great for deer size game and if he wants to hunt bigger and badder animals than deer like elk and moose and bears bump it up to the Hornady 265 grain light mag load, Corbons 280 grain load, or one of the Buffalo Bore loads.