For context: I use a single pin sight and I set it up for maximum point blank range. My setup allows me to get 0-40 yards while still holding on hair with my pin set at 30 yards.
I halved my distance(15 yards) cause I knew this would be the peak of my trajectory. I picked an arrow weight that kept the impact in the vitals. Inside of 15 yards, they hit right where my pin was aiming. 430 grains was about the heaviest I could go with the speed that my bow shoots.
I hope you can make some sense out of what I wrote.