RE: What "truly" is the advantage (Mech vs. Fixed)
I am currently using 4" right helical feathers.(All about the forgiveness).
If I had more energy,I would also use a larger cut head but my energy level limits the size head I can use.
I have also used 3" helical feathers before and could shoot my broadheads and field points the same in the yard but wind made more of a change to my fixed heads than it does with the 4".
I would have no problems screwing on fixed heads and going hunting and have done it but I prefer the expandables in most conditions.