That’s just what I did 24 years ago. He STILL hunts deer with it.I don't own rifles in either caliber, but I did shoot a coyote with a .243 that my brother had once. He died. But you can't think that a .243 is more useful than the 6.5 CM for a kid to.use on deer and antelope. I have had follow up on a couple of bucks and feral hogs that others have hit with .243s and have not been impressed. When my grandson is a little older I intend to buy a 6.5 or 260 Rem for him and not a .243 as the ballistics are clearly superior.