Guys, my findings with the Barley twist Steyr i had against the FTP was that the non scientific ratio of 2.5 - 1 worked for me. When i sat at a target and read the wind i would say to myself "well if i was using the FTP i would aim edge of kill, but im using the Steyr so i will give it a kill" - that says to me in layman terms "The Steyr is more affected by wind than the FTP" - i dont need any test tubes or beakers to know that much.
Except that it's not as simple as that mate.
The scenario you are talking about is your findings for a particular pellet at a given fps in a particular wind. Change the pellet and what happens, suddenly the poi changes and may or may not 'seem' to be better in the wind.
In simple terms it's basically where your barrel chucks the pellet at that speed and has naff all to do with the wind.