If your thinking at all about using solids... why didn't you just stick with your 30-06?. 30cal is one of the most versitile cal's. If your woried about overexpansion just use barnesX or failsafes, and the like.
I know a few people who do use fmj in the 30 size for coyote... They say it works well. I have only shot one coyote with a fmj... 7.62X39mm It was running away, in the back and out the front... just floped over and died.