And remember you "CAN" get your pattern too tight and be throwing a baseball at shorter ranges test from 20 40 yards!

I've shot more turkeys inside 20 yards than beyond 20 yards, but that might just be me.
For my purposes, a full choke is just fine.
I actually hut turkeys with my O/U, full over modified.
Inside 20 yards, I'll pick the modified chamber....... if I have my wits about me.