I don't mess about with changing chokes now that I have them the way that I want.
Just my opinion on what suits my kind of hunting.
Whatever the gun I like to have one full choke barrel at least.
It suits my shooting which is pest birds on crops & a lot of fur. I want that full concentrated heavy shot BB - 00 SG pattern whack on fur.
I have read & agree with that once you have learned to shoot full choke well, there is no going back to more open.
I have two Live pigeon SxS's, one is 100 & other is 90 years old. Both are choked fairly tight Between .030 - .040. I think that they knew what they were doing, boring the gun that way.
They wanted to ensure a close kill on a fast rising target & had a lot of money riding on the outcome.
Some of those birds would be a bit shot heavy to eat though.
I have shot rabbits with 7 1/2 shot & full choke & separating the meat from the shot is like picking fly specks out of pepper.
O.M