Here is a technical question that I hope someone can answer. When one speaks of an aircraft being armed with twin Vickers machine guns, it seems to me that there were in fact two separate machine guns mounted on the aircraft but connected to a single firing mechanism.
One often reads of machine guns jamming during combat with the result that the pilot abandons the fight. If the so-called twin Vickers were as I have surmised two separate guns connected to the same firing mechanism, does that mean that both guns have jammed simultaneously? How likely was a double jam? Presumably if just one gun jammed, the pilot would continue to pursue his prey with that single weapon.
Am I wrong in my assumption? Was a so-called twin Vickers in fact two barrels connected to and sharing a single feeding, firing and extractor mechanism?