If opening the Missile Bay Doors while still in the Dropship the indicator to say they are open will change, but the doors will still force a delay on your shots. Toggling the doors open or closed again wont change this, you need to shut down and try again.
If opening the Missile Bay Doors while still in the Dropship the indicator to say they are open will change, but the doors will still force a delay on your shots. Toggling the doors open or closed again wont change this, you need to shut down and try again.