correct I.D needed

[earni74]

Received this 37x94mm USA round, i'm not sure that the marriage is correct, the nose part is none magnetic ( probably alluminium ) that does not unscrew if it did, comments welcome

 

[sgdbdr]

I think it's a practice projectile from AAC. See https://www.bocn.co.uk/threads/rare-usa-37x178-case.69058/

Cheers,

S.