Tribe thanks for the response and I agree mechanics, location & practice are the focus. His travel coach is a former D1 4 yr starting pitcher so he is getting solid instruction on a weekly basis. He has only brought the gun out twice in the past 1 1/2 yr to gauge where the boys are at. By no means am I trying to get in my sons head about his velocity. This question was purely to satisfy my own curiosity from those of you who have been where I'm at now. I know there is no formula, or definitive answers, I was more looking for a baseline of where your sons were at in 5th-6th grade level.