It's supposedly just a .30-30 Win with a small rifle primer. Allegedly known as the American 30 too. Apparently, it's a Black Hole Weaponry proprietary thing. And a big time collector cartridge that used to be made by Federal. You can use regular .30-30 brass.
Whole forum on it here. http://blackholeweaponry.proboards.com/board/54/american-30
