Can anyone help me with a little dilemma I am having? I have a Pro Hunter Encore and I am wanting to have a custom barrel made for it in a 338 cal. My issue is no one will chamber for the 338 RUM in an encore because of the barrel wall thickness issue. MGM will make a 338 in a 340 Weatherby Mag but I do not like the radial necks I have discussed this with Kerry of MGM and he will make a 338-8mm Mag (basically a 338 STW). I have been looking at the 338 Jarrett and the 338 Baer also but can not find any dimensions for either. I would like to get as much out of the 8mm rem mag case as possible and be on the safe side for the Encore. I was looking at a modified 338-358 STA if this isn't the same as a 338 Jarrett or Baer. Any help is appreciated.