I've just seen too many shot and greater than 60% is excellent. Break 70% and you may be on your best day ever. I'm not talking about just pulling a few feathers from the birds, but counting the one that do not rise about the horizon. For 13 hours, the scout has to be on one of his best days to locate the continuous flow of birds. And it could be that Marsden was in a triangle from the roost to the food source to water and back to roost.
Bundle shooting usually can't be rushed and really doesn't add to the total. But a ribbon of birds will look as though it is breathing. Watching that contraction and expansion will work into a rhythm but the ribbon usually falls apart for a finite time when disturbed just like Boat-tail Grackels but a bit faster. Twins are relatively common but you really have to work to get 4 or more.
Marsden is either shooting 2 or more trombones or 2 semi-autos with tube extensions(looks to be of the 7 shot total variety.
Kind Regards,
Raimey
rse
