About 5 yrs ago I had a guy on ebay by the user ID of ht do two for me. I did exactly what you stated a 22 in and threaded for factory chokes. Seems like to me his tooling would only do Winchester chokes on 20 and on 12 gauge your choice of Remmy or Winny or visa versa can't remember. He done great work.
Handis 223 Superlight, 357 Maxi x 2,
Pardners 410 22''full, 20ga Tamer, 20ga 20' threaded for chokes youth model, Pardner 12ga 18.5 threaded for chokes.
too many numerous ones that have been sold