.303 id

I have a .303 ball [I think] pictured below. H/S is simply a bomb symbol, with orange primer seal. I tried to get a picture of the H/S but it did not show very well.

Thanks
Steve

Steve, it’s a Japanese Navy tracer round made at the Tokyo Explosives Factory. The headstamp identify it as a pre-Type 89 (1929) production for British made Vickers F and Lewis aircraft machine guns (flexible).

Thanks Fede!

I’ve got quite the same with the bomb and “88”.