In my latest Shooting Times magazine hornady has an add for the "17 Hornet".
They say it has comparable trajectory to a 55 gr .223 round. Should be a great walking gun for out to 300 yards, with only 6.4 inches of drop (with 200 yard zero).
I have loaded the 22 hornet before and the cases are so thin that I ruined a few. You have to be sure to have the bullet lined up very well before you try to seat it. I would still like to have one ;)