Oh my GAWD...

So i was in a sniper only match in Wave rider. and i was in the opponent base. and their was a guy in the tower and i sneaked on him and i used my scope and shot him.. But the thing is the bullet went on the wall instead of him. Im 100% sure i did not miss. I was using an L96A1, I was RIGHT BEHIND HIM!


Anyone know how i can fix this??? How can i miss from 2 cm? WITH A SCOPE