I've been thinking about that value sinceI posted my response. The 1 fps / 5 grains was from OT2 and seemed to be low to me.

Especially after looking at the chart for a comparative arrow from the Iron Mace 3 gpi would be more reasonable.Ineed toshoot the 3D Selects at 72# through a chrony and see how it compares to the GT's. OT2 was giving me only a6 fps increase for an arrow that is 30 grains lighter.