1.22.156656
Buckshot shells do significantly less damage than in previous versions of the game. It used to be possible to kill unarmored players and infected with one shot to the chest from close range, now it requires at least two shots, even at point-blank (infected die from one shot sometimes). This seems to be the case for every shotgun as long as it is loaded with buckshot.
This bug makes buckshot the inferior shell to slugs. Buckshot used to be stronger up close whereas slugs had a higher effective range. Now slugs are better in both cases.