Took my new XD-9 Bi tone Service to the range for the first time today. Put 200 rounds of WWB. Everything went great except for the 1 FTF out of the 200 rounds. But it was a kind of a wierd event (for me being a newb). I was half way through a mag of 16 rounds. All of a sudden, click and nothing. I racked the slide and locked it back. A round ejected and then i looked at the next rounds still in the magazine. Instead of the next round being nice and horizontal in the mag, there were three rounds all next to each other lined up, but VERTICAL still in the magazine with their primer sides up and the bullet side down in the mag. How does that happen? Is it something I did that would cause this or is it the gun?