I have not shot the velocity hunters but GTs are a tough arrow. I don't think I would be afraid to try them. But then sometimes they sacrifice strength for speed on other speed arrows I have shot.
I shot the GT Velocity Pros last year which are the same arrow just simply tighter tolerances. Its an excellent arrow and comes in 400 or 300 spine. I shot the 300 spine and they were perfectly spined for my set up. I never hunted with them and opted for the heavier GT Kinetic Pro 300 spine instead. They would make a great hunting arrow for deer here in TN. You will also pick up some speed.