Jon - My 338 -is getting a 28 #6 tube and Vais break , before I used 250 gr partitions at 2700fps but the last couple of years , I've been disappointed in their performance , where I hunt I have to break them down quick , lots of people , so I take both shoulders , my range can go to 400 yards, so ---- been thinking of the new bonded bullets also , any body else got any ideas - - thanks