I'd concentrate on getting something that's handy and fits you well. You don't need any magnum cartridge or a gun with a heavy stock or a long barrel. For your hunting, the cartridge you shoot won't matter too much, just be sure to get a typical "deer cartridge", like a 308, 243, 260, 30/30, 35 Rem, etc. I'd most likley be looking at bolt action, short action gun instead of a long action like 30/06 or 270 Win.