I love a skeet or I/C choke with #8 or #9 trap loads but for the best patterns and breaks I try to limit my shots to 40 yards maximum.
At 35 to 45 yards I switch to a modified choke with at least # 8 1/2's and # 8's. There are a few shooters at our club that shoot a mod. back at the HDCP but they get the birds right out of the house, with the wide open patterns. However I have seen them shoot a 21 or 22 score if there is some weather,causing them to double check on the angle or flight of the bird,before shooting.
One reason most shooters screw in a full choke +/- when standing at the 24 yard line or more but everyone has their "Thing"
since confidence in a load and choke can break a lot of birds.