In Scream (2022 film), Dewey said this after shooting the Ghostface several times:
You have to shoot ’em in the head, or they always come back.
Then he came back to shoot the killer in the head but failed.
Near the end of the movie, Sam shot Richie (who was revealed to be one of the murderers) in the head; after he was dead for sure, in order to prevent another killer to rise.
Why was it necessary to shoot them in the head? How was this supposed to prevent them from coming back? Can't killing them by shooting in the heart prevent them from coming back too?