I had a load in one Rem 700 barrel that was 41.5g of Varget and a cci 200. Barrel had some wear on it so work up to that load, speed and accuracy was great.
60g sierra hp is awesome on coyotes, near and far, never a splash, even at 4400 out of a 6 Rem AI.
Nosler sells some 55g soft points that were originally made for export to Australia for dispatching kangaroos. These Kangaroo bullets should be excellent for coyotes. I worry that the sierra 55g blitz king may be too explosive, but that is a WAG on my part.