"Bob Martin" wrote in message ...
I don't know why the idea keeps failing to catch on; it could
be it's too single purpose for fighters or just not as easy to
aim.


I think the A-10's gun might be downward pointed a bit... but most fighters
wouldn't use a downward-pointing one because it is unsuitable for a-a work.

The Hog's overall assembly is not on the jet's centerline, but it's
arranged so that the firing barrel is centered up, probably perfectly
squared, when it fires. Given the power of that particular weapon,
I'd be a little surprised if the firing barrel was anything BUT
perfectly square to the centerline (both X and Y axis). Of course, I
also seem to recall that the shell basically traces a straight line
from barrel to "effective range", and doesn't need drop factored in.