Re: Ranging coyotes
As a long-range coyote popper wanna be myself, I have found that a BRF of some make is considerably better for getting the range quickly than any separate units I ever used to ranges of 600-700ish or so. When it comes to sniping dogs at intermediate ranges like this I would put quickness of ranging as one of the most important considerations, and that means a BRF (I have the 10X Leica BRF's myself and love them, though I admit to not keeping up with the latest technology the last several years). The Bushnell's get a pretty good review for the money if you can't go for Leica, Zeiss, etc.
Have a buddy of mine that I hunt with who uses a 243 AR-10/87 V-Max combination, and with our system (me ranging him shooting...most of the time), he has killed more LR dogs than anyone I've ever known out to ~800 yds., on 1st shot kills.