Great post Paul !

A picture is worth a thousand words, and since that's about how many words it takes to explain some of this stuff (weekly I might add), this shows the difference in reaction of arrows with different stiffnesses.

As close as 30 yards, there can be several inches difference in POI with only small variations like 25 grains of point weight, an inch or two of arrow length, or a 1/2 turn of the limb bolts. Bare shaft tuning really lets you see the difference so you can get things flying well.

-Bulz