...It is such an uncommon find on this side of the big pond that I'd fit it up for an uncommon cartridge too. The 357 Remington Maximum you mentioned would certainly fit that mold and dispatch deer with little fuss either sound or recoil wise, but would limit range more than something like the 6.5 Grendel. The Grendel round, operating at very safe pressure levels for your gun (I'd say stay under the mid forty thousand PSI level)would pitch 130 grain bullets around 24-2500fps. If that sounds lacking to you please realize that the superior ballistic coefficients of those bullets assure great penetration and produce ballistic energy levels that surpass the 308 Winchester out beyond 4-500 yds, with less wind drift and a flatter trajectory. Very much similar to the 6.5X55 Swede cartridge which is more than sufficient for deer, and all medium game.The Grendel is available as a factory load from Alexander arms, Wolf is now loading it as well, and brass is being produced by Laupa.Just Google "6.5 Grendel" for more info. Brockman's gunsmithing has been chambering rifles for this fine cartridge.