Snap Caps / dummy rounds.

• .17 Hornady Magnum Rimfire (.17 HMR)
• .17 Remington
• .22 Long Rifle (.22 LR)
• .22 Winchester Magnum Rimfire (.22 WMR)
• .22-250 Remington
• .270 Winchester
• .30 Carbine
• .30-06 Springfield
• .30-30 Winchester
• .300 AAC Blackout (.300 BLK)
• .300 Winchester Magnum (.300 Win Mag)
• .308 Winchester (7.62×51mm NATO)
• .338 Lapua Magnum
• .357 Magnum
• .357 SIG
• .38 Special
• .380 ACP (9×17mm)
• .40 S&W
• .44 Remington Magnum (.44 Mag)
• .44 Special
• .45 ACP
• .45 Colt (.45 Long Colt)
• .45-70 Government
• .50 Action Express
• .50 BMG (.50 Browning Machine Gun)
• 5.56×45mm NATO
• 5.7×28mm FN
• 6.5mm Creedmoor
• 7.62×39mm
• 7.62×51mm NATO
• 7mm-08 Remington
• 7mm Remington Magnum
• 9×19mm Parabellum (9mm Luger)
• 10mm Auto

Let me know if you'd like any other calibers. I'm happy to model them.