My brace height is 5" and axle to axle is 28I would check the regulations in the state you are planning to hunt. For example the minimum arrow length in Idaho is 24", that way you have a starting point for length. If you got a heavier GPI arrow, heavy insert and 125 gr broad head with a .400 or .350 spine you should be able to make it work. You might have to cut the .350 a little longer to soften the spine. What is your brace height and axle to axle? I can run a couple options through the OT app.