Any ideas what this is. It bears the Gerstenberger & Eberwein Em-Ge brand logo which suggests it could some kind of target made to catch projectiles if anything
Pellet trap. Similar to this: https://www.amazon.com/Gamo-6212204..._4?keywords=pellet+trap&qid=1636807550&sr=8-4
Ooooooh, sniped!!! My brother had one in his cellar....but I don't think he used pellets and I don't remember how big or heavy (gauge) his was for....long gone now!!!