RE: Pin Spacing..
We weren't saying that you simply line up the pins with the speed printed on the scale, but use a sighted in 20 and 60 yard pin as your brackets. If you use the scale that correctly gaps your 20 and 60 yard pins, it doesn't matter if you are shooting 5" helical feathers or 2 1/4" low profile target vanes with points from 75 to 150gr, the gaps for the remaining pins should be correct. At the very least they will get you probably within 2" or so of being on the mark.