OK guys from the left...

30.06
7.62x54R
6.5 Creedmoor Making a precision rifle using this caliber.
.32 Remington From my Grandfather's hunting rifle. A Remington Model 14.
.44 magnum
.40S&W
9mm
.32 acp
.36 caliber round ball

18 inch Iowa

Iowa had 16" guns. Only the Yamato had 18" guns.

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)