I wouldn't go below the minimum loads for that round.
Low pressure is more dangerous then high pressure in a modern firearm.
http://www.handloads.com/loaddata/d...;type=Rifle&Order=Powder&Source=Truthfully - you picked the wrong gun for a child that age.
You would be better served buying your young daughter a .222 Remington over your present choice.
Muzzle Blast, compounded by recoil will result in you scaring off your daughter from hunting at that age more then the experience of harvesting a white tail deer. Not to mention the fact that long hours in a deer stand tends to bore the heck out of little kids. I would ease her into hunting slowly and not be in such a rush to get her to shoot her first deer right off the bat.
I have a niece that could recite anything you wanted to know about hunting off the top of her head from the time she was 3 years old. She often times pulled the handle for my dad when he was reloading shells. They were best friends, and her dad even bought her a .243 when she was 6 years old, thinking that some day she was going to go hunting with him.
My sister and her X husband quit having children after she was born, even though what they really needed was a boy for dad to take hunting with him.
Well it ended up that she is kind hearted and she told her dad that she would accompany him on his hunting trips, she even told him not to get mad if she makes noise and scares the game away so he can't shoot it. She was just acting like she was interested in hunting because she wanted to please him.
Well she is 17 years old now and she has never gone hunting with him and she has never shot a gun and she doesn't intend to either. They still have their father / daugher times. He still takes her out to Wyoming and Colorado in the summer to go hiking and she was interested in going to school out near Gunnison when she graduates. Only her mom has her now and her dad and mom can't afford to send her to school, so pretty much unless she gets some kind of scholarship from some school, she is going to have a hard time going to college when she graduates. She has been taking college courses the last two years, while she is in high school and is really smart. But in my opinion, if she would have went hunting with daddy, I would bet that he would pull open the purse strings and pay for her to go to school someplace.
So the moral of this story is - I have been there, done that, ain't gonna do it again.
I have 15 guns and I have not seen my daughter since she was 6. I also planned on taking my daughter hunting with me one day, but it never happened either.
I'm probably just going to leave everything to my family when I die and let them fight over it.