I have been looking for flush chokes for mine. I fount 1 used one. Then bought one in package on clearance. I Google 410 beretta mobil chokes. And Hatfield Shotguns pop up. Went to there page to see what chokes they take. Well they use beretta mobil threads. They offer a 3 choke set choke box and wrench. 30.00 or a 5 choke set choke box and wrench. 45.00 plus 5.00 shipping. A beretta full online is 47.00 plus shipping. I ordered the 5 choke set. Chokes came in today. Put the full choke in. Now the squirrels better watch out. Thought i would pass it on in case someone else needs a set of chokes.
Interesting, post a picture if you pattern that tightest choke
I will try soon.
It has a full, IM, mod, IC and skeet.