A blank killed Jon Erik Hexum back in the 8s.
As I recall, or IIRC, poor John took a prop .44magnum, put it to his temple and laughingly pulled the trigger. The revolver was loaded with blanks, but the discharge, when reaching the muzzle end of the handgun, encountered John's temple and carried with it a chunk of bone into his brain.
More ironic, his salvaged, healthy heart was transplanted into the chest of a Las Vegas pimp, whose own heart failed after years of drug abuse.