I shot once right before work had tan shorts on. I got to work looked back and realized I had blood dripping like a bullet shot me in the ass. I didn't want to walk into work with blood on my shorts so I took a black marker and colored it all black.
Compared to veins arteries have alot more internal pressure which could result in a large blood loss/hemmorrage. However, injecting into an arterie is less dangerous than injecting into a vein.
i had a girl with me one time it sprayed out of my delt all over her she turned all pale and almost lost it. i know thats not the first time shes been shot with my fluilds. hehe