has anyone seen a rimfire case that looks like this ?
picked it up at the range. It looks as though it was formed and then maybe its just a bulge.
It got me stumped it appears to be about the size of a .30 carbine case but rimfire

Most likely one of the "Flobert" shotgun shells, my guess would be a "9mm double charge" one.

Like the 2nd from the right (far right is a 410 2 1/2")
Winchester, and others, made them with all brass case.

Thanks tailgunner
I did a search and found the case as you described.
http://www.cutlerscove.com/nea...tshells/fiocchi9.htm