First: Welcome to the Nuthouse! You need to wander over to the Introductions thread and let us know about you.
Second: It sounds like you have a good sound rifle to begin with. Shooting that well with factory ammo, unless you are a top pro the only thing I can think of is a little trigger work and polishing of the innerds. I would suggest you think about all your likes and dislikes with the gun, find a gunsmith that specializes in rifles used for what you want to do, and sit down with him and talk it over.
Third: We can always wait for Billt to chime in. You'll recognize Billt. He's the one wandering around with a bullseye on his back, because we all hate him
Actually, we are just waiting for him to have the "big one," so we can all go to his estate sale