Proper fit is one of the most important elements in shooting and is hardly ever discussed. I bought a youth model seven for my 11 YO nephew to use this year, he is short for his age, it fits him nicely but will probably only do so for a few years if that long. An AR collapsable stock can be adjusted to many lengths but that is high money for a transitional gun. On a short stock you can easily add a thick butt pad later. The 243 is a great caliber for a youth deer rifle.