Yup, training ammo. basically a blank, but one that OSHA would never approve of, meant to function through the action, but not require special brass
I have one in 30 Army that looks more like rolled paper and one in what looks to be a 32 rimfire that may be a shotshell.
That brings up something else, I have a small number of old cartridges that I'd like to give away to some cartridge collector if they want to come and get them. Not worth much but some, like the 10.4mm Swiss Veterli are interesting (rimfire, the gun had a double firing pin)
Art