Are the youth model stock and the full size stocks interchangeable on any of the rifles mentioned? By the time the young lady is 18, she could be anywhere from 5' tall to 6 ' tall. A new stock would be a cheap,easy upgrade if and when she outgrows the youth model. The 7mm-08 is an outstanding round. So is the 6.5-55 Swede.
That is one thing that interests me about this rifle....
http://www.legacysports.com/products/howa_youth2n1.html