A-26 gun noses?

[Rufus123]

I see that when the A-26 was developed there were noses tried in .50, 20mm, 37mm, and 75mm.

It looks like only the .50's were used.

Does anyone know how many 20mm cannon were in the prototype noses?

 

[Kryten]

Does anyone know how much ammo they carried, there seems a heck of a lot of room in there for .50 ammo boxes?