How can you "improve" a weatherby double radius shoulder? You can use any Weatherby magnum action..you may just have to change the mag box out...but a 257,270,7mm, 300, 375 or 340 way will all work...the 300, 375, and 340 are just a rebarrel away..with that in mind any M70 long action or Remington 700 long magnum with a 375 length box will work too.I was hoping you would comment. I know you have a few Weatherby’s in your safe. I do know that the 300 action will work but I figured I would start with the 340. My reason was hoping that there would be a plethora of them out there that have been shot once or twice and put away due to the punishment they can provide. My plan is to rebarrel and rechamber. I’m building my daughter a 340 Weatherby Improved that will bear her name.