One of the most common malfunctions I see in competition shooting is a bulged case on a reloaded cartridge that fails to go into the chamber of the gun. This is a simple problem that can remedied with a case gauge and checking your ammo before using them in a match or at the range. The case is typically swelled so large that in the reloading process the case does not return to spec even with the resizing die. In my case shown in the video, the case was from a 9mm open gun where pressures are much higher than typical 9mm. The spent case therefore exhibits extreme swelling all the way down towards the rim. Most reloading dies are unable to resize all the way to the rim. I must have picked up the brass at the range and tossed it in with my own when I reloaded it for my Glock. You may also run into this problem when purchasing reloaded ammo from the people at the gunshows.