Mossberg 44(US) from the
Civilian Marksmanship Program:
With the right ammo, this is one of the most accurate 22s I have ever fired -- compares with H&R Mdl 12 and/or Rem 512T. Bull barrel, lead lapped bore, CRISP trigger, and surprisingly lightweight for off-hand shooting.
From back when the USA could still manufacture first-class stuff.