My 10 year old granddaughter has done extremely well in smallbore rifle silhouette shooting and now she wants to move up to the centerfire "Hunter Class". What I'm looking for is ideas on a rifle/caliber for her. At age 10 she stands 5'4"(going to be tall like her mother who is 5'11"), weights 100 lbs. even. She is left eye dominant so she shoots left handed. She goes thru .243 ammo like it was water in a restocked Savage M99 I have. I don't believe a 6mm will regularly knock over the "Ram" target so I'm looking to build her a rifle/caliber that will give her the best chance in competition. Suggestions?? Lawdog