Gentry, a friend of mine has a Thunderhorn that is 60# at 29", and he was having trouble with some carbonwood 4000 arrows that had a kick to them. I let him try an Axis 400 that I had just built up for a hog hunt, and they weighed 620 with a 125 Woodsman, 100 grain steel adapter, 100 grain brass insert and three fletch. They flew as good or better than anything he has tried yet, including his 2020 aluminums. He didn't have his carbonwoods set up with much weight on the front, so that may be the problem. My Axis arrow is 30.5 bop.