I'll be the first to tell you that I know little about pump shottys-other than shooting them.
I should have gone to Dicks or Gander Mtn before purchasing this model to get a feel for it. I still need to actually break it in, and see if I can duplicate the problem. I was lurking on another forum and saw where someone mentioned that the discount REM bulk pack ammo (12ga) can bind up and cause this to happen?
That was the ammo that I was using in 00buck.