shell for 16"/50, with 6 powder bags
Battleship’s 16-inch shells - Framework - Photos and Video - Visual Storytelling from the Los Angeles Times
http://www.navweaps.com/Weapons/WNUS_16-50_mk7.htm
Although, yes it is from an Iowa-class BB.
The fuse end is kind of interesting. I don't recognize that off hand, although my more recent (but not that recent) experience with big bullets is with US Army stuff, like the 155mm M864 DPICM.
--- Btw, thanks for the original question starting this thread. The identity of the 3rd one was bugging me.
dw (former USN STG3)