My fieldpoints shoot 5 yards "shorter" than my broadheads. That is my fieldpoints are good at 25 and my broadheads at 30. Works all the way out to 60 yards so I just know that my pins are 25, 35, 45, 55 for fieldpoints and 30, 40, 50, 60 for broadheads. Works like a charm for me. I don't think it is tuning related because my dad shoots the exact same set up and has the exact same results.