.50 BMG cartridge id

I was going through a box of loose miscellaneous ammo in the cellar last night and came across some cartridges I couldn

This should be a Remington-produced armour-piercing round made for the UK under the Lend-Lease program. The “Z” simply shows that this round was loaded with a single-base nitro powder.

[quote=“d.zawicki”]I was going through a box of loose miscellaneous ammo in the cellar last night and came across some cartridges I couldn

Thanks for the information.