Re: 338-375 Ruger or 330 Dakota
Forming the brass shouldn't be an issue, but chances are you'll need to get whoever does the work will have to build your dies. PT&G has specials on their resize die reamers and blanks, I'd just order your chamber reamer & rz reamer & blanks at the same time. I'd recommend re-barreling rather than re-chambering though, as the Sako barrels are glass hard and will beat up the reamer. I put togeather two 7-375 rugers this winter and am very pleased with the results. You should be able to use 338 Dakota data to start you loading. The case will load an exra 5-10 grains powder than the Dakota so it should do well!