I came across this on the Rowland site today while looking up something on the 460 Rowland. He (Johnny Rowland) calls it the 960 Rowland, and it is loaded on 9x23 comp cases, with the bullet seated a little deeper as he describes it. I presume this is something similar to a 45 Super vs .45 auto situation where the outward appearance of the calibers are exactly the same, but pressure, case internals, and O.A.L. might be different. In the case of this 9x23 vs “960 Rowland” I assume the cases are in fact exactly the same, but that the pressure & O.A.L. are the only differences. A Google search seemed to indicate that this was a new offering as of early 2014 around at least January or February. I presume they do custom conversions to a range of pistols to make this work as they do with the 460.