Woody, my remington prefers the 50gr. BT over a heapin helpin of varget but, on occasion they will exit rather violently. I have never had the 40gr. BT exit, but have had them not make 1 shot kills when I felt they should have, due to their fragile design. Since I don't want the hides the Sierra 52gr.BTHP Match is my old standby but I'm learning these little red tips better all the time.
The 55gr. FMJ will enter and exit with about the same size hole on each side as long as no major bone is encountered.
Around here, coyotes are nothing but a lot of trouble. They've killed cats, pups, and even a calf or two for one of the neighbors.