Check the ReloadBench and search for .338 whisper. They have some loads listed by one guy. I emailed him and said it wasn't his loads but something he copied elsewhere. If you are a customer SSK can provide that info.
Since I got a set of SSK's Hornady die sets to punch a 7mmBR to .338 this means I can likely get that info (it comes on a sheet with the die set which I have mislaid in some safe and logical place but as I have dozens of safe and logical places I don't know where to look).
I have not talked with JD Jones at SSK in a long time... let me give him a call and see if he will send me some information on the 338 Whisper family that I can post on the website. He might just say yes as god knows I have got more then a few people interested in the 300 Whisper over the years....