Anyone have a Clue ?

I have this friend in Indiana and while she was digging up here garden to expand it she came across some items in a box. I know it looks Military, but I'm not going to get on it. I don't have a clue what they are I spent a couple of hours searching for her, but that's the most my Health allowed me.

Good to see you Frank. The rifle clip is Carcano ammo, 6.5x52 I think. I have one downstairs in the collection too. Same markings. The projectile I can't say without measuring it, if you did it should be pretty easy to sort out.

The cartridge base had me thinking french lebel.

S M I head stamp ~ Società Metallurgica Italiana, Campo Tizzoro, Italy

See how close I can get with the projectile ~ judging by the frame of the chair back that you can just see in the top of the pic with the gaps the frame.
I'll say the projectile could be between 75 & 90mm Dia this is my best WAG's just for fun.