Bullet earrings

Did we learn nothing from Brandon Lee’s death?

One of the fatal missteps that lead to his death was the false belief that the primers in the emptied shell casings were completely dead, allowing a primer to eject a bullet into the barrel of the revolver being used by the 2nd unit for close ups. That bullet was later propelled by blank into Brandon Lee’s chest during 1st unit shooting as nobody had checked the barrel for obstructions.