I don't know of anyone who makes a semi auto 22 Hornet in rifle or pistol... Or ever did in the past,for that matter... There's just isn't much demand for one, so no one ever made them...

You can buy a semi auto 22 Win. mag. and it will do about the same thing that a hornet will do, you just have to keep the range down to about 100 yards max..

DM