My Mossberg has seen more 300 rounds of various loads through it without one hiccup of any kind.........until I loaded 25 count Winchester Super X 12 gauge, 2 3/4, 3 1/4 DR. EQ., 1 1/8 OZ., 4 lead shot. Round after round no extraction, empty hulls stuck in the chamber. Anyone else have trouble with these loads? Other than these it shot other brands without fail (as usual). I even tested the plain cardboard box 00 Buck from OLIN, some people call it crap, I call it my new favorite load alongside the flight control 00 buck.