This is the second time I've stepped in to this thread because of you two. Don't push your luck on what happens if I have to step in again.
I just loaded my brand new C9 and experienced this exact issue. Fully loaded 8/10 round mags. Pulled the slide back to chamber a round and the slide gets stuck on the bullet.And this was what it looked like after I put it back together and racked the slide with a full mag. Then when I pulled that mag out.