This is one of the visual effects shots that I did on episode four of the fan film series "Splinter Cell : Extinction" which is based on the Splinter Cell video games.
The series was made by Companion Pictures (companionpictures.com)
Mocha was, again, very useful for tracking the exit wound onto the bad guy's head.
The compositing was done in nuke.
If you would like to see the full episodes, you can find them on IGN's youtube channel ".start":