:rolleyes:
What the hell does that even mean?!?!?
It their engine that's so shitty it doesn't properly differentiate between free space and solid objects close up, causing your bullet to hit the rocks the barrel is resting on top of. In other words, the barrel of your gun passes through the solid space occupied by the rocks, but your bullet does not. Yippie, shitty code!
(Every other FPS I've played since about 1995 :p has fixed this issue, as not to make their code look like it was done by rank amateurs.)

