In article ,
harry wrote:

Came across this.
https://en.wikipedia.org/wiki/GAU-8_...eets_VW_Type_1.
jpg

Very good Harry! I always knew that the A10 (tank buster) fired "rounds
the size of milk bottles" (and at about 4000rpm), but I really hadn't
envisaged the size of the mechanism!

I can't help thinking that the world would be a much better place
(though less interesting for me) if the American arms industry didn't
exist :-(

John