Kronan -

Now is a very imformative post - thanks for the detail.
I'll take it and pass along that the A-10 gun is built along the centerline of the aircraft and has no negative cant.
Btw - as you pointed out - the differences in what are desirable for a A/A gun and A/G gun are noticeable. Supposedly the Hornet's gun is the perfect combination between that laser beam A/G gun and the shotgun A/A gun. It is at 2 degrees up cant. Of course the gun itself is your standard American fighter Vulcan 20 mm. A former A-10 pilot who came to my squadron on an echange tour came back from his first flight firing the gun and commented that he wasn't even sure if it was firing or not!
To keep with the degrees cant information is this thread - any F-15/16 pilots want to share any information?

USMCFLYR