Japanese and American Shells and some Carcano full boxes

Found these shells at a flea market on the way to Gettysburg yesterday. three are Japanese with two being of the same caliber. The fourth is a US round. I already had one of each ot the one type Japanese round and the US round. The small one is a 20mm round of some sort. The Carcano rounds came from a local Antique flea market this morning. One of the boxes is still sealed. I included them for scale of the shells.

https://www.milsurps.com/images/impo.../zksM2gu-1.jpg

https://www.milsurps.com/images/impo.../S8ECy1s-1.jpg

https://www.milsurps.com/images/impo.../ZlVLzNu-1.jpg

https://www.milsurps.com/images/impo.../qxaC3BP-1.jpg

https://www.milsurps.com/images/impo.../fW31lTC-1.jpg

https://www.milsurps.com/images/impo.../t8XkVsz-1.jpg

We don't get to see those around here. I do have a clip of Carcano like that though, came in a huge ammo package a friend wanted me to sell for him.