Unknown 40/37mm

Would anyone be able to identify this projectile? It was found in the UK at a chieftain shooting range.

IMG-20191204-WA0034 IMG-20191204-WA0033 IMG-20191204-WA0032

It isn’t mine I must add.

It is a 40 x 53 SR practice projectile with impact signal made by Nico.



Fede, you are incredible, You can even identify junk. Bill