Black Powder or Smokeless Powder?
How can I determine if a shotgun is intended for black powder or smokeless powder shells?
For example, I have a Riverside Double Barrel Shotgun 16 Gauge with Exposed Hammers made by J. Stevens Arms & Tool Co. I think it is a model 215 and Produced between 1914 and 1924. I think it shoots a 2.5 long shell, although I shot a 2.75 long shell in it.
I'd like to know for sure if it for BP shells and is it for 2.5 long shells.
I don't know of a "gunsmith?" in my are that I trust.