My first hand proved cap wraps with their what (11gr???) really skewed my FOC results…so I crown spray a cap now…much lighter.
One friend even went so far as to change out his NOCKS to lighter, smaller ones and got several % increase in FOC, where by adding 25 gr to the front weight, was negligible for him.
I don’t like those tiny nocks, but I’ve never caught my Bud in a windy story.
I would imagine each person’s set up, (center shot, draw, shelf configuration, release) all impact some of this stuff in flight, but for pure math, I was really surprised how a wee bit of weight in the tail dumps FOC… but fedders don’t weight that much, but wraps do!