Re: Long range coyote rifle?
I guess I'll have to put in my .02.
I use a .243 IMP and it would fit your bill except I (personally) don't consider the .243 win a 500y wind bucker. 250y wind bucker yes, but to shoot flat enough to 500 your bullet has to be too light to really buck the wind.
25-06 rem gets the thumbs up. 100gr Nosler BT @ 3300 fps is pretty flat to 400 and not too hard to guestimate beyond that. You can buy them loaded from Federal.If you don't need major wind bucking ability then load up some 75gr Hornady V Max bullets @ 3700 fps for crater sized holes in all forms of varmints. 25-06 is also excellent for deer and antelope to 500+ using a Nosler 115gr Ballistic tip.
Good hunting, Coyoter
All it takes is One Good Shot!