I have an 870 which I have been using for some time and it has recently acquired an annoying habit.
Every few rounds fired, the pump mechanism jams and becomes difficult to disengage, which of course results in some frustration.
I have since disassembled the slide and bolt mechanism to see if I could find some evidence of wear that might be causing it to bind but to no avail.
Does anyone know what might be causing this?
/B