actually since they updated the gatling, the physics of it are much better. if you watch the flight path of the bullets and extrapolate from when you cant see them anymore, it actually lines up with the ship. the problem is you have to aim the gun kinda counter-intuitively, you have to adjust for your own ships velocity. The bullet velocity is both forward and the direction your ship is moving. Then you have to make that stream line up with where the enemy ship is headed.