Yesterday I tried to sight in a new A17 with Hornady 17 gr. V-Max ammo. Every round keyholed. I cleaned the rifle thoroughly and tried again today, with the same result. This time I took a Henry .17 HMR with and the ammo performed perfectly. Has anybody else had this problem?

I would try a different brand of ammo, but all I have right now is Hornady. When I cleaned the barrel, the rod was passed from breech to muzzle, so I am sure I did not wreck the crown.