Graphic video. Don’t watch if you get squeamish about blood.
The first rule of using and storing a projectile weapon: Know your target and what’s beyond it.
Know that projectiles may bounce back, as this German gentleman discovered the hard way. He’s fortunate in many ways.
He could have put his eye out, but he’s gonna need stitches. Lots of stitches.
Skip to 1:20 for the gory part.