Tempest with 40mm cannon

[NZTyphoon]

Fascinating! The Vickers P gun wasn't a 40mm, it was a 47mm - see the article on it on my website.

I will have to amend the article; I had no idea they were actually fitted to an aircraft!

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/
Military gun and ammunition discussion forum:
http://www.delphi.com/autogun/messages

Heh, I added the blurb to Wikipedia's article http://en.wikipedia.org/wiki/Hawker_Tempest#Tempest_Mark_V an article by an A G Williams http://www.quarry.nildram.co.uk/Pgun.htm  as a reference...