The 20 rounds of factory Kynoch ammo that I have are loaded with a 245gr. RN bullet with a LOT of lead exposed. I susepct the velocity is in the 2,150fps range.
My .356 Winchester puts of those ballistics from it's 20" bl. (250 Hornady at 2,160fps)

The 9x57 will easily do that & more from a M96 and considerably higher from a M98 action.

The only data I have is for MS rifles and the very similar 9x56mm MS These used Speer 250gr. SP's at up to 2,205fps with IMR3031 in one rifle and the other rifle tested developed only 2,088fps with the same load.

The article I have shows Stoeger listing the 9x56MS at up to 2,160fps with a 245gr., yet 2,296fps from a 22 1/2" bl'd. 9x57 Mauser.