I finally shot my XD9SC for the first time today, and it did great w/ lots of different types of ammo. I did have one problem though, one time one of the rounds got stuck in the magazine, and the spring was unable to push them up. The round was wedged in there, once I got it unstuck, it worked flawlessly the rest of the day. Is there anything I may have done to cause this? Or what would cause that to happen?