Thanks,
@YancyW I was perusing the archives of the Internet on this topic and someone posted an idea that was rather genius. Barnes makes a .308" bullet designed for 30-30 winchester. Their thinking was it was designed for lower-velocity expansion. Maybe that bullet in a 30-06 humming along at say 2600-2650fps (110-130gr) would provide ethical 250 yard accuracy and expansion but cut the typical 18lbs-21lbs of felt recoil all the way down to about 10lbs-12lbs.
This may sound plain goofy, but my experience with 30-06 is almost nil. For my other kids they had .243s or 7x64 / 7x65r guns and I knew how to manage the recoil effectively. I don't even have 30-06 dies at this point because its never been the right gun for all our use cases.
But then I saw how nice this "Forever rifle" was and decided to buy it for my youngest that didn't own a rifle whatsoever under the thinking this would be a gun he could carry with him the rest of his life. But in the meantime, it needs to be comfortable for a 9 year old that weighs 85lbs to shoot.