I have two small ring 98 Mexican Mausers with very nice wood. One will be built for my grandson, the other for me. I was perfectly content with sticking to the 7X57, but now you all have me thinking of a re-barrel to 250-3000 or possibly 257 Roberts. Which do you think would be best for my grandson, or even for my wife until the grandson comes of age? I will leave mine original.