For G50 pilots who are interested in this topic here are the numbers for the G50 ammo:

1 S, Ball
2 Armour Piercing
3 Tracer (Red)
4 High Explosive
5 Incendiary
6 Armour Piercing/Tracer (Red)
7 Armour Piercing/Incendiary
8 High Explosive Incendiary/Tracer (Red)
9 Incendiary/Tracer (Red)