If coyote hunting is your priority don't worry too much about the twist, but if show off groups are something that concerns you then go with a 1-9". I have been shooting Speer 52gr HP bullets in my 1-7 twist AR for over 10 years and they actually perform better on coyotes than when I shoot the same load out of my Contender with a 1-12" twist and same 16" barrel length. I have had exits in the slow twist on occasion, but the Speer very rarely makes it to the offside ribs in the fast twist.