I believe going above 85 gr. bullets in the 6x45 in an AR will have the seating depth really limiting you. Normally for coyotes I shoot 55 Nosler Ballistic tips or 58 V-max with either IMR 4198 or X-terminator (A2230). I have a loading with X-terminator and 70 gr. Ballistics tips that is just about one-hole accuracy. They run about 2,950 fps and I killed a nice 8 pt. (175 lbs.) with that round this past season, one shot kill.
Glow Bull Warming:
He that sitteth in the heavens shall laugh: the Lord shall have them in derision. Psalm 2:4