Re: dialing in long range game
Don't take our suggestions as flames. We're protecting our sport from those who would take it lightly and resulting in unsportsmanlike results.
As the guys above have mentioned, the best thing for you to do is just get out there and practice. Try a few shots at 100, 200, 300, 400, 500, and so on. Know what your bullet will do at those ranges. Once you know how far the quarry is, you can have a good idea where your bullets are going to hit. Practice in the wind and not just off a bench but with your bi-pod or field shooting position. Of course, get a rangefinder. If you have access to those computer programs like Oehler and a chronograph, so much the better. However, the best gun, chronograph, computer program and other stuff won't, by itself, make you a good long range shot. Only practice will!
Good luck. LR shooting is time consuming and can eat up some $$$ but it is fun and well worth it.