I have to say that I believe Stewart to be severely mistaken and possibly mislead by one file at the Australian Archives as well as crew members memories. That is not said to denigrate his work, which is awesome, but sometimes the memories of 80/90 year old sources is less than perfect.
NAA: MP287/1, 2145
Series number: MP287/1
Control symbol: 2145
Barcode: 477315
Number of pages: 16
Title: Beaufort Project: Development of Twin 5" gun turrets, financial provision for.
I have a Rough index to A11252
A705 9/18/228 Twin 0.303 inch nose gun photographs pages 22, 24, 38 and 54.
A705 9/18/249 0.5 inch wing guns introduced from A9-541 (or 540), directive of 27 October 1944, replace 0.5 with 0.303. Page 97 A9-621, 0.5 inch front gun. Page 184 indicates wing guns retrofitted to all Beauforts, and in production before A9-280.
A705 69/19/22 page 8, In early 1940 the Australian Prime Minister was part of effort to obtain a pair of twi