The small to medium 6.5's are a good choice. My daughter is petite and I built her a 260 Rem. on a Mauser action with a compact Leupold scope. Cut down the stock and put a cheek piece on it and she shoots it lights out. I have .22lr bolt gun for her to practice with and then set up a 10/22 with a full on Magpul stock set to fit her. This gives her need for speed shooting satisfied and also give her practical practice for her bolt gun.