I would look at the new Kimbers first. You will do fine with one m.o.a. out to 500 yards so any decent factory rifle will serve you well. Find one you like, get a muzzle brake
installed if it doesn't have one, and get practicing.
Out to 500 yards you will be well served by a mil dot or BDC reticle so you don't have to click for elevation. This will help save weight by providing a lot more scope option than if you were clicking for elevation.
Light rifles will shoot very accurate. It's shooting them accurately (especially in the field) that is the problem.