Jeff, I'm sort of like you... I think identical means identical.

As far as parabolics being accurate? I shot a 3d shoot Sunday with some friendson here, and did "OK" but wasn't happy with the results... Of course, I had just broadhead-tuned my bow the night before really quickly to get ready for Colorado, and had only shot one three-arrow group with my new heavier arrows at 20 yards.

I came home that afternoon and found out that the extra FOC and mass necessitated an increased pin gap from 30 out to 50. After I got my sights dialed in, this was my first 30-yard group. Someone asked a few weeks ago why I use pin nocks? For this reason right here.... Sure would have been nice to have had 'em on this dozen as well.