I'm not sure which 9x72 ya'll refer to but there was a 9x70 which either developed along the same timeline in Germany as the 400/360 Westley Richards, or some other maker, did in England. I assume the 9.3X74R came next followed by the proprietary 9.3X72R S&S sometime in 1906 - 1908. As Kofoed notes the 9.3X72R S&S(Sauer) is not in the lot with all the 9.3X72R variants. If a 9.3X72R variant(D,E,N, etc.) was dropped into a 9.3X72R S&S(Sauer) the rifling would more than likely break the fall of the cartride by catching the taper of the brass. A 9.3X74R(seventy four) will insert and fire in a(some) 9.3X72R S&S(Sauer). If a 9.3X72R will not insert into the chamber, it is not a 9.3X72R S&S(Sauer). I've only seen one and heard rumour of another sporting weapon chambered in 9.3X72R S&S(Sauer). But there could be other pre-1912 rifled tubes out there which are thought to be 9.3X74R(seventy four) that are actually 9.3X72R S&S(Sauer).
Below will give a general idea of the shape of the 9.3X72R S&S(Sauer).
Advertised as 400/360 Purdey similar but not same as 400/360 Westley Richards
400/360 Westley Richards
Kind Regards,
Raimey
rse
