I can shoot 80+ from the ground w/o difficulty. However, from sitting position in a stand, or kneeling, or any of the awkward positions I find myself in while trying to get a shot off at a deer, I find it almost impossible. I currently shoot 73# and it is quite comfortable during hunting situations. I am in the process of setting up a new Guardian at around 65#-haven't yet found the "sweet spot". Both shoot at speeds in excess of 300fps using Maxima Hunter 350's. Plenty fast enough for whitetails in my neck of the woods.