I think being able to shoot higher poundages has a bit to do with conditioning!!!! If you shoot all the time, shooting heavier poundage is not a real big deal for a hunting bow. I usually don't shoot my hunting bow that much during a given period of practice generally maybe 30-40 arrows. I shoot my hunting bow at 70#, but go down to 55-60# for my target bow and 3-D use. As Blackfrog said there is a big difference in pulling a 70# bow 150 times a day or more compared to a 55# bow in a tournament. 150 X 70# = 10,500lbs pulled vs. 150 X 55# = 8250lbs for the tournament. Fatigue is definately a big factor in a field tournament scores. A lot of archers in field are shooting bows in the 48-52lb range, the only problem is the letoff holding weight for good backtension with 80% letoffs at that weight. In fact I am considering changing my target bow module to a 65% letoff for that reason.

Aim Hard!