The case size of the old 17CCM is ever so slightly smaller than the newer 17WSM. So theoretically it would be easy to rechamber to the 17WSM. And the case head of the 17WSM is only very slightly larger, so it should be possible to use the same bolt. If one could figure out a way to convert the centerfire Cooper model 38 bolt to rimfire, it would make a spectacular rifle. I asked our local gunsmith but he’s not interested in the project. Any smiths out there who have tackled something like this and would be interested in doing one?