If you want half inch groups at 100yds then you need something other than a Mini. If you need to shoot half inch groups at 100 yds to kill coyotes, you must live somewhere with pretty small coyotes :wink:
The mini 14 is perfect for what I (and my father in law) bought them for, to throw in the pickup at the ranch in case we see a coyote or some other varmint, or to throw behind the door in case some two-legged critters show up at the ranch uninvited. They'll get knocked around, scratched, scuffed, and dinged up, but they'll sure as hell shoot every time you pull the trigger, and eat any kind of .223 you can find whether it's clean or not. For that kind of ruggedness and reliability, you trade off some accuracy.