New challenge!!!! shell casing type???

Ok folks, I have a challenge for you. What is this shell casing? A Friend of mine gave them to me. He got them (about 150) from his grandfather

Shotgun Shells for Target Practice: The Best of 2024

▷ 3D printed set - Bullet Casings

Fiocchi Adds New Knock Down Big Game Cartridge Series. Here' - RifleShooter

Fully reproduced in-game items! New Handgun Bullet Case Pouch and Shotgun Bullet Case Pouch in the Capcom Store! - Saiga NAK

Steam Workshop::[SYR] Bullet Casings

Super Nintendo SNES Cartridge Case Premium Game Card SFC Storage

NEW] Ultimate Gun Shell SFX Pack Released

A-Frame®, Dangerous Game Heavy Rifle Ammunition

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New miraculous PC game in development? : r/miraculousladybug

Ha - CSI: Color, Stories, Inspiration - Scrapbook Challenge

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For NEW2DSXL 2DSXL LL Replacement Full Housing Shell Case Cover Shell Cover Case for NEW 2DS

Game Card Case for Nintendo Switch Games, Hard Shell Protective and Durable 24 Slots Card & 24 Slots Micro SD Card Storage Holder Box