First, I'm not a huge fan of .223 for deer hunting, much less for a kid with buck fever. My daughter started deer hunting at age 7, she is now 9. I set up a single shot .308 with a 14" barrel and 2" pinned break shooting 120gr. Recoil was not bad at all with reduced recoil loads. The first year she shot a button buck. Last year she killed a great buck. 75 yard shot and verified live weight Of 218 lbs. We were expecting to shoot a 4 or 6 pt that evening. 45 minutes before dark, what may be her deer of a lifetime stepped out. I would have hated to have known she was shooting that animal with 22 cal 60gr bullet. Plan for the unexpected. This year I have set up an AR in 6.8 spc. with 110 gr Barnes tsx.