Probably why you haven't considered it is because cutting extended chokes flush with the barrel is not a viable option and makes no sense at all....all you could hope for is to ruin the chokes you have.
I believe the 23 came after win chokes...If the chokes are factory it should be marked somewhere on the barrels.
If not then they are aftermarket thin wall chokes there's not but two thin wall choke manufacturers to look for....Briley and one more can't recall the name of the other I want to say Trulock ?
I'd keep my fingers crossed hoping they were Brileys.
