I've corrected my original post 11 to refer to the WS1 choke in my M12 as a Bell choke, not a jug choke. A fellow shooter was calling them a jug choke...will have to correct him next time we talk. And I learned what a bell vs a jug choke was...haha.
At least O'l Flinter got some actual WS1 choke dimensions out of the discussions.