I have a ranch (don't do much long range shooting yet but plan on getting there in the years to come) and there is a field with a ton of whitetail on it and the range is around 650-680 yards farthest. What caliber do I want if I am going to get a custom rifle and shoot deer from 100-680 yards, elk 100-400 maybe 500 yards, coyote as far as 700 yards, a hogs as far as 500 yards? I got a 8.5-25 mark 4 to put on it. So custom rifle amazing scope, I don't reload. What caliber do I want?