9mm steel case masquerading as brass

I think that's the Turkish stuff. How was it packaged?

Berdan or boxer primed?

Looks like it has that notorious step inside too.

thats bullet seating ledge .. i don't remember who all makes that case style ..

but see lots of reloader's posting about it in the Sage's Reloading FB group ..

OZK headstamp is OZKURSAN. Turkish manufacture.
Non-metallic bullet. Steel case.
Cheap 9mm Ammo For Sale - 124 Grain FMJ Ammunition in Stock by Özkursan - 50 Rounds

you should be able to reload it even if its steel case .. its a pistol round .. not much needed to do .. flare the top and crimp

steel case rifle round is another matter .. it can be done but will wear your die more