Surprisingly only the first shotgun shell remnant I've found : r/metaldetecting

Found small room in a rock overhang with old shotgun shell

Historical Archaeology, Identity Formation, and the Interpretation

Korean War Marines

Old Shotgun Shell Found Metal Detecting!!!

Ammo Finds With Some History - Metal Detecting For Coins & Relics

Archaeological Field School & Lab Opportunities and Internships

Testimonials

Why do shotgun and revolver's spent shells fly out of the barrel

All Brass Winchester No. 10 Metal Detecting the Ozark Mountains

July « 2016 « Trowels and Tribulations: IUP's Archaeology Blog

Not metal detecting but I was walking in the woods near my house