Wyo:
Also... what relationship do you think there is between that shot charge and choke? Why open them?
In general, higher charges, like tighter chokes, tend to cause greater pellet deformation. The result is more uneven patterning and less retained pellet energy way downrage. Shooting shot faster produces more penetration at close range but as the pellets fly they loose energy faster because they are more deformed and misshaped. At 40 yards those more deformed pellets may actually be going slower than well shaped pellets fired at a lower velocity. For long range, I'll take a good moderate velocity load over a high velocity magnum load any day.
