Nice arrows. Did you knap them yourself? I used one on a small buck a few years ago with a homemade osage bow. Got a pass though but lost the head. So . . . i hope someone many years from now finds it!
I would be curious as to the weight variances in those arrows and heads, have you weighed them?
Then spin checking those must be a nightmare….
You have chosen to use equipment that is limiting your range- for sure. Arrow straightness, weight variances and all that….do you see all that affecting your consistent accuracy? ( It must)