918v,
I'm just curious . Is that a .45 acp case ? It appears to be. Is it Federal ? The reason I ask is several years ago a gun shop owner friend showed me a .45acp case that was fired from a local LEO's G21 . I can't recall for sure the make of the case but I think it was a Federal . What he showed me was an exact duplicate of the one you shared. It was new ammo, not a reload . If some of you remember, Federal had an issue with their brass years ago with certain lot numbers in a couple handgun calibers.
Ironically, I have never seen a .40 brass guppied like that / that badly fired from a Glock or any other make . I'm sure not saying they don't however. I just haven't seen one myself.
I have owned 3 Glock 22's ( one Gen 2 , 2 Gen 3 ) , still have one Gen 3 and knock on wood have never seen them distort brass upon firing beyond a very subtle & slight bulge above the head ( no more so that found on .45acp cases fired from a 1911 ) all with new factory ammo only in those Glocks . I choose not to reload for or shoot reloads in my Glock 22 .