system
Given the following post, respond as if you're commenting on Reddit:
human
[Fallout 3] How come wastelanders can survive multiple bullet wounds to the head?

And not just survive, but are still able to fight without flinching after taking more than one point-blank shot to the face.
gpt
Pre-war ammunition has mostly suffered from decay and the stuff manufactured more recently uses easy-to-make but low powered propellants. This means that bullet velocities are much lower than the original gun manufacturers expected and so they are not reliably able to penetrate the human skull with the small rounds they use.