Model 1890 Pump 22 that's smoothbore ???|Winchester .22 Rim Fire|Forum|Winchester Collector

Texas MacDonald said there are no markings at all on the barrel.
  

Brl being unmarked means it’s custom work, but what a dandy idea!  Over half a million ’90s built, how many smoothbores?  I’ve always wanted to shoot a smoothbore .22 to find out what kind of patterns it produced, but the very scarce factory smoothbores are far too expensive for my humble means.

tsillik said
Are smooth bores used for bird shot?

  

Of course, in the .22 shot cartridge, what’s commonly called rat shot, I don’t know the numerical size.  Fired through a rifled bore, the effective range is about 15′, but would expect considerable improvement in a smoothbore.