Shotgun moves itself?

[Pelimatt1]

Hi there! I have the game on Steam, and using the keyboard and mouse. When I am in firstperson view with the shotgun, the cursor moves around in a little zone and I am not doing anything. It's really annoying.:( Is there any solution? Please reply! Oh, and it does this with the sniper too!

[Roboslob]

Its gun wobble, standard feature of the game.

[Whiplash]

:) Yeah, my worms also die whenever they jump to water. So annoying.