Since acquiring this historic artifact I have been going full throttle trying to learn more about the history of US Battleships. I have bought a gazzilion books on the subject trying research everything I can in-order to hopefully fabricate a historically accurate display for this barrel slice. In my studies I have come across some factual discrepancies that I am hoping someone here may be able to clarify.
This barrel slice came from a 16"/50 Cal Mark 7 gun used on a WW2 era US battleship. The majority of reference material that I have read states that the 16"/50 Cal gun was only used on Iowa Class Battleships (USS IOWA - BB61, USS New Jersey - BB62, USS Missouri - BB63 and the USS Wisconsin - BB64) and that the Iowa Class predecessors, the North Carolina Class and South Dakota Class ships were all fitted with 16"/45 Cal Mark 6 guns. I have one book that states that the North Carolina Class and South Dakota Class ships also had 16"/50 Cal guns, contradicting the other books I bought and online reference material I came across. Can anyone here confirm that the 16"/50 Cal gun barrels were only used on the Iowa Class Battleships?
From what I have learned, by increasing the gun barrel from 45 Cal to 50 Cal allowed the Navy to increase the number of powder bags to 6, causing increased explosive power behind the 2700 pound projectile which in turn increased the effective distance the projectile could travel and its impact force. The books I have read so far claim the gun could fire its massive AP projectile between 24 and 30 miles accurately.
Anyhow, the point of all this is that I am trying to figure out which ships to include in my display that used the 16"/50 Cal Gun. :-)