If you go with The 17 for coyotes keep under 100 yards and use the 20 grain bullet. Go for the head if possible. I shot this one in the sholder (I would have shot it in the head but I diddn't wanna get too cocky, I should have it would have dropped)@ 60 yards don't expect much fur damage or a big blood trail. this one ran about 100 yards then died out of sight I waited about 15 minutes then went straight to where I thought she'd be and there she was. I think with the 20 grain a pass through might be possible, no way with the poly tip.
This is the entry wound side, see the small red spot.