IDing .303 British Ammo

[Norinco45]

I purchased this WWII ammo to complement my son's 45 Long Branch No. 4 Mk 1*.

The head stamp is 1943 DI Z. I believe this means it was manufactured in 43 by Dominion Industries and contains Z type powder what ever that is, please feel free to correct this or add more info if I am incorrect.

I do not know what the red tip on each bullet means? The bullet looks like a normal FMJ round. Any info you can provide would be appreciated.

Thanks all.

 

[SDC]

"Z" means it was loaded with nitrocellulose powder, instead of Cordite, and the red tip is one of the identifiers that was used to designate "tracer".

 

[green]

DI is Defence Industries a Crown corp operated by CIL Dominion ammo subsidiary. Made 2.8 billion rounds in WWII.