Your friend was indeed lucky.
I went to CTD to see what they have. In the listing for the 250 round box there is no mention of it being reloaded, but when you look at the 115 grain in the 500 round box it clearly states that it's reloaded. That is a big no-no for me. I have to believe that they both are reloads. Also in the comment section there is mention of some rounds being rejected because the bullet had been pushed too far into the case. It's possible that the first round recoil might have pushed the bullet back into the case, or that it came that way. You should do a complete inspection of all remaining ammo for overall length and tightness of crimp. And of course don't shoot any more of it.