I can only say that I think I have taken 3 bucks that were probably 1.5 yrs old and one that was maybe 4.5 all with the bow over a 2 yr span. These were the biggest bucks I saw from stand except for2 and I did not get a shot on them. All of them would go around 100-110 ", even the 4.5 yr old. I do not know how to age a buck all that well though.. I saw several small young bucks the past 2 seasons.