wolf, My 1st thought was "WHY NOT! - What a great idea"
Also, thought of the rebore vs a rebarrel since your want to keep the original contour. I don't remember the tip diameter ot the feather weight barrels. I personally would want a barrel tip thichness of no less than 0.125" after the rebore - You may not have that much left. But since you want to stay close to the original contour this could also apply to a new barrel.
Good Luck and post us some pics