Watched a LITTLE 10yo girl take two deer on the TN juvenile hunt this past weekend. She was using a .270 with the Remington reduced recoil loads, both deer were mature doe and DRT!
Her dad said he initially bought her a .243 and she had trouble with the recoil. One day out of curiosity he picked up a box of the reduced recoil loads for his .270 and said it kicks much less than the .243.
I've never considered the RR ammo because I only have teenage boys who would shoot an RPG if I would let them! Her dad got the hunt on video and I took special notice to watch the recoil and how it affected her. It was not bad at all and she said she never even noticed it.
Just food for thought as .223 IMO is border line small for deer (esp with an inexperienced shooter).