A man is shot in a gang related shooting, he is shown dying with a bloody wound and blood pouring out of his teeth.
A man is shot in the head at close range, no blood is shown.
A man who is tied up and bloodied is abruptly shot in the head by one of the captors. Blood splatter is shown and his head snaps back, brief but very realistic and sudden.
A person gets suddenly shot in the chest with blood seeping through their shirt and they collapse, realisitcally convulsing. Then they get shot in the head off-screen but a ton of blood suddenly sprays onto a character's face.
A man is killed by having a nail gun pressed against his head and fired off-screen, his body is momentarily shown.