Not a contribution, per se, but the H&H instruction videos with Ken Davies, walk up and both driven grouse and also high pheasant are well worth consideration. I am not into that realm of hunting/game shooting, even at our area pheasant club the Sat. tower shoots are no where like what I perceive a driven bird shoot in England or Europe to be. For one thing, at our club, the guys working the tower only throw out one bird at a time, and wait until the shooting is over on that bird and the dog(s) have retrieved it back to their handlers before they throw out another one. Not quite the same as having 10 pheasants moving at Mach 3 and at altitude- and the other guns on adjacent pegs hammering away= or incoming red grouse jinking with the wind and the volley of shots ringing out-wish I coudl recommend something that would give us all a real close-up view of a true driven bird shoot--but I can't..