Lot of 100 Brass Bullet Casings Mixed Calibers Once Fired Brass

What are the components of a firearms cartridge and what happens

Once Fired .303 British Brass Casings

Once Fired Brass - 300 RUM - Norma (50 Pieces) - The Extreme Store

Bought a bunch of once fired 30-06 brass, but this is what I found. What was this reformed to? : r/reloading

Brass – Brothers Arms

9mm Luger Reconditioned Brass 500pcs

Previously Fired Non Polished Mixed Headstamp 5.56/.223 Rem Cases per 1 lb - Budget Shooter Supply

Once Fired .380 Auto Brass

223 Rem Rifle Brass - 500pcs - Washed and Polished - Capital Cartridge

Sleeping Giant Brass : 45 Colt/Long Colt Brass (100ct)

7.62x39 Polished Once-Fired Range Brass (Qty: 100)

Mixed Spent Bullet Casings Once Fired 9MM 223 40 45 38 357 7.62x39 308 –

Once Fired Brass - Republic Ammunition