what year did mossberg start making a seven shot 12 gauge
1988 was the year that Mossberg introduced the 3-1/2 inch 12 gauge and Federal Ammunition introduced 3-1/2 inch unfolded length shotshells to go along with it. Though the nationwide ban on lead shot for waterfowl hunting didn't happen until 1991, the path to that ban was well underway in the 1970s.