Unknown ammunition

They call taht in french : douille porte charge.
the translation is : case to carry a load.

What is it ?
thanks
JP

Looks much like the magazine of a propellant priming screw which goes into the base of a large case.

32mm in diameter and 140mm long?

Primer tube for a large artillery shell casing?

Brian

Like one of these (just examples):
(275)

ok, I understand.
thanks Alex
JP