Originally posted by brady:
I have yet to get a reply from The auther or the publisher  
If you're referring to Francillon then I'm not too surprised.  I know someone who's being giving him earache for years over the gun question!
Incidentally, I find it fascinating to track the way in which mistakes are made and repeated, even in prestigious books.  Mason's "The British Fighter" - THE reference work on the subject - has a photo of a Hurricane with the first experimental 20mm Hispano installation (two guns in underwing pods) and identifies them as Oerlikons.  He didn't reply to my letter, either...
Tony Williams
Author: "Rapid Fire: The development of automatic cannon, heavy machine guns and their ammunition for armies, navies and air forces" 
Details on my military gun and ammunition website: 
http://website.lineone.net/~a_g_williams/index.htm Military gun and ammunition discussion forum: 
http://www.delphi.com/autogun/messages