If you change the cross hair position it would.
The problem isn't the position. The problem is the angle.
Not only is it completely impossible to determine the camera's position in third person, client or server sided.
But even if you could, you can't raycast on the client side. There would be no way to determine where the crosshair should be.
You can't just leave it in one spot, because the camera isn't looking at the same angle as the player.