Hey guys, I have and love an AR-15 I go to the range and play alot. But my question os more about the .223 round in general. is it sufficient enough to drop bigger varmits in their tracks? if so what store bought ammo do you recommend. I have seen several coyote's on our deer lease and Have heard there is a mountain lion or two. don't wan't to shoot something and having it run off. but don't want to head shoot a nice coyote or mountain lion either.