Based on my experience with the .17 Remington, you can't go wrong with this cartridge for ranges under 250 yards. Get a 1:9 twist barrel that will stabilize the 30 gr. 17 cal bullets. I've read that the .17 Rem is not enough gun for big midwestern coyotes, but I've killed 40 lb.(weighed on a scale, not just guesstimated) southeastern coyotes that didn't know that. Most kills are DRT or run 20-30 yards at the most. This caliber is also very fur-friendly on thin bobcat pelts.
Now, with all that said I admit that an AR in .20 Tactical will be the third AR that I own. My first one was a Bushmaster Varmint Special, my second will be a DTech in .17 Rem. In fact, if I can save enough money before my daughter's tuition is due again, I may ask Mike to build #2 and #3 at the same time. /ubbthreads/images/graemlins/tongue.gif /ubbthreads/images/graemlins/ooo.gif /ubbthreads/images/graemlins/smile.gif