A few weeks ago I got the opportunity to go shooting with Latt Durrance. We shot at 600y then 800y. I had never shot past sighting in at 200y before. Since I hit that target at 800y I am hooked. I want to start shooting long distances. I have only hunted archery since I was a kid so I know nothing about rifles. I got a model 70 300 win mag in a trade a year or so ago and put a few boxes through it but never been too interested in shooting it until now. I put a Monarch 3 4-16 BDC scope on it. I know it will never be a long range shooter but I am disabled so I am on a limited budget so I want to get the best accuracy and get as far as I can with what I have. So my question is; what bullet, powder etc,. should I load? Any info and help is greatly appreciated, thanks.