Originally Posted by RobF
In other words if it chronos the same at 55 and starts off the it takes the same wind. You need to chrono away from the muzzle to remove the known and proven effects of strippers on chronos.
Yup exactly - if it's the same at the muzzle and the same at 55 yards - theoretically there will be no difference in trajectory or windage.
If however you get higher fps and a tighter spread (but with the same MV) then a few things come into play that will effect both trajectory and windage (and windage to a greater extent than POI - I think...) - higher fps, higher average ballistic coefficient which are almost certainly the result of greater pellet stability in flight.