its been a while since i saw this movie, but why did the first shot go through his head and keep going and the second shot turned him into a giant freak? what happened?

its been a while since i saw this movie, but why did the first shot go through his head and keep going and the second shot turned him into a giant freak? what happened?

tags: yeah,

from: https://www.tumblr.com/blog/view/knifeandlighter/90624962051