Below are pics of a buck from Dan's place showing his 2.5 year sheds, and 3.5 year rack. At 2.5 he was a clean 8 pointer, and at 3.5 he had a 1.5" G4 on the one side and another on the other side a bit shorter. I have no doubt in my mind that if he would have survived to 4.5 y/o he would have been a 10 pointer. I would say 4.5 based on this but I don't have the experience outside of this specific rack to know for sure.