One of the best things you can do is go to a local range that rents guns and try out a bunch of them. That way you'll see what feels right in your hand.
That's assuming you're talking about pistols, but you say you've got access to a lot of land so maybe you're after a rifle?
That's assuming you're talking about pistols, but you say you've got access to a lot of land so maybe you're after a rifle?