If that is true then there really couldn't have been an assult rifle prior to the creation of the cartredge. A few of the early experimental intermediates were; the (Winters) 8x33.5mm, 8x46mm, 8x45mm, 7x45mm, 7x48mm, 7.75x39.5mm (GECO M35), and 7x39mm (DWM), 7x30mm (Polte...