I found this video regarding the P.08 and mud entertaining, especially halfway through when the muddy pistol is fired in slow motion. I've actually wondered about this, glad this guy performed this "test" so I don't have to. I'm glad he wore safety glasses, although I nearly spilled my coffee when he fired it with a barrel obstruction.
Enjoy!
https://www.youtube.com/watch?v=z_IeAaR5AmU