This is DUMMY AMMO and is UNABLE to fire any projectile, or be modified to fire any projectile.
Denix 25 Dummy Rounds Solid Metal Display Pieces - They are Much Smaller Than 45 Cal : Replica Rifle Shells : Sports & Outdoors
Why shouldn't I use a functional pistol as a prop for a film? - Quora
25 - DUMMY .44 Magnum Ammunition - Fake Prop Plastic Ammo Cartridge Model
Dummy Rounds Fake Ammunition –
Prop Gun, Revolver - Single Action by DeSteiner, Download free STL model
Guns: How can Hollywood get it so wrong? - The Shooter's Log
Dummy Cartridge
Dummy Ammunition – Ronin Sports
Ammo, Bullets, Belts and Magazines - Relics Replica Weapons
Sidearms - Atomic Rockets
25 - DUMMY .44 Magnum Ammunition - Fake Prop Plastic Ammo Cartridge Model