"Hobo" wrote in message
...

Has there ever been an aircraft with a gun permanently aligned
off-center? I don't mean swivel mounted, but permanently fixed at a
point other than straight ahead.


Yes

Wouldn't a gun pointed at a downward angle make ground attack easier?

Possibly but the most obvious examples had the guns pointed UP
at around 30 degrees. German nightfighters in WW2 would position
themselves below and behind their target and fire at bombers
silouhetted against the dark sky.

Keith