As has been previously stated AA cartridges are premium target cartridges which will yield tighter patterns. The chokes that you have indicated and the varying distances cannot indicate 80% patterns at all ranges in all chokes in any gun that I have met, and I have some particularly tight choked doubles.
You can easily vary patterns delivered by trying different brands and types of cartridges, and even more easily by loading you own cartridges.
I have obtained nice 25 yard IC patterns at 25 yards, in a tighter choke barrel, by using wads with petals cut to 1/2 height, and/or by varying powders/wads, using hulls with more capacity, so that there is more shot above the wad petals in the cartridge. One can also make further spreader loads by layering shot and card wads, though that takes more fuss in the loading. I am careful, however, to stick to published shotshell loads. I have just completed this process for a 16 gauge double with remarkably tight chokes, improved modified and extra full.