The current method works great... The Ammo and Burst stuff can be a bit weird at times.
Here's what I've seen:
If you have Ammo=2 set and Burst=1 set, the plane will fire one missile, do a mock curley shuffle and fire the other.
If you have Ammo=1 set and Burst=2 set, the plane will fire 2 missiles almost simulatenously.
That's what I've seen anyway... and I've not tested higher than those values.
Here's what I've seen:
If you have Ammo=2 set and Burst=1 set, the plane will fire one missile, do a mock curley shuffle and fire the other.
If you have Ammo=1 set and Burst=2 set, the plane will fire 2 missiles almost simulatenously.
That's what I've seen anyway... and I've not tested higher than those values.
I'm what Willis was talkin' about.