File:BL 6 inch Mk XXIII and QF 4 inch Mk XVI gun barrels compared.jpg

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English: Sectional diagrams comparing British BL 6-inch Mk XXIII and QF 4-inch Mk XVI naval gun barrels.
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Plate 4 in "The Gunnery Pocket Book" B.R. 224/45, 1945.


Scanned by Historic Naval Ships Association. Downloaded from http://www.hnsa.org/doc/br224/pl4.htm
Author Admiralty, Gunnery Branch, UK
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current00:26, 6 October 2011Thumbnail for version as of 00:26, 6 October 20111,728 × 643 (166 KB)Rcbutcher (talk | contribs){{Information |Description={{en|Sectional diagrams comparing British BL 6-inch Mk XXIII and QF 4-inch Mk XVI naval gun barrels.}} |Source=Plate 4 in "The Gunnery Pocket Book" B.R. 22

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