Brandon Lee died because in a previous scene they used bullets without a casing so the revolver wouldnt look empty facing the camera. One of them got stuck in the barrel, and in the next scene where they were using blanks it was propelled out and struck him. A blank with a bullet in front of it is essntially just a live round with extra steps. Idk what you think I’m incorrect about. That doesn’t mean filling in the barrel would be safer, it wouldn’t, the gun would explode. The energy released by igniting gunpowder has to go somewhere.