I just bought my 8 year old a Mossberg .243 bolt action rifle for his ninth birthday. I was looking to buy him some bulk ammo too and seen that I can get 75 grain V-Max $1.14 a round from Cabelas. My question is should I get him these for him to hunt deer with? I have always thought of the .243 as the best deer round for where I live at in Kentucky because they dump all their energy into the animal under 100 yards. But, I have never hunted with that round with anything less than 85 grain bullet, it works well. Thanks for the input, let the suggestions begin.