This is what I did:
Damage = 5
Armor = 1.0
Shield = 0.3
SubSys = 1.0
Mass = 0.0
It may be low damage, but when applied it makes it fairly even... It depends upon how good you are at using it. A good enough pilot can rip a fighter to shreads with the 'Shuttle Phaser', but many pilots wouldn't get any proper benifit out of it.
With the mass at zero, it doesn't push the fighter away, but it still rotates the fighter, nudging it off course all the time, but I don't think this can be avoided.
The other problem is that the ai fighters won't use this weapon... Maybe I have to beam-free it (because it is a beam), but I don't have to for Alpha 1... Oh well... It'll just have to be an experimental weapon for Alpha 1.