Jon-Erik Hexum (died 12 October 1984)
Hexum died of a gunshot wound after he accidentally shot himself in the head with a .44-caliber magnum pistol loaded with blanks while on the set of the TV series Cover-Up. Wadding from the blank cartridge had been driven into his skull. Hexum was replaced in the series by Antony Hamilton, but the show didn't last all that long, running only from 22 September 1984 to 6 July 1985 before being canceled.
Brandon Lee (died 31 March 1993)
A stunt gone wrong during the filming of The Crow cost the son of Bruce Lee his life. A blank fired from a .44 magnum revolver felled him. He died hours later in hospital. The metal tip of one of the dummy bullets had somehow pulled loose from its brass casing. When the dummies were unloaded and replaced with blanks, the metal tip remained behind in the gun's cylinder. As soon as the blank went off, its explosive force propelled the dummy tip through the gun barrel -- and into Lee's body.