I've killed 10 coyotes with a .22 LR this summer. It amazes me how many guys ask, "will a .22 kill a coyote?"
I could kill a moose with a .22 and so could you.
I would not doubt it at all. I guess it depends on where one lives, here in the midwest we have Coyotes that get 40-50 lbs sometimes. I have heard pelenty of people see them run off after being shot with a 223.
In this area it is 50/50 sucess for coyotes with a 22 magnum,, 50%. I am sure those 50 that got away, most of those will die, but they run 300 miles, so who is going to find them after..
Your friends who ask "Will a .22 kill a coyote?" YES of course it will with perfect shot placement or a small enough coyote.
With a 223 on up you can shoot a trotting or running coyote and have 90% or more chance to kill and drop them with a no so perfect shot
My friend who uses the 22 magnum, when he shoots them close and gets a perfect shot they do seem to drop. otherwise they run off and get EDUCATED to our calls.
but this is the midwest, and coyotes can be call shy and stay way out or are moving most the time, and when they do sit still it is not for long, you do not have all day to position the cross hairs perfectly on the heart of whilee Coyotee.
the 22 can do it, but I'm sure a 243 can kill a smaller elephant 10 time out of 10 with a perfect shot placement in ideal conditions
When we talk Eastern midwest coyotes and average shots and a 90% kill ratio!
Then 22 is plain and simple a Squirrel gun including the magnum.