See my post for the same problem Oct 11. Shells could be a problem, but should a gun be that picky with certain brands. Mine jams happened with Win. I do think there's something to having the gun shouldered securly when firing, and breaking in according to manufacture. I've never shot autoloader shotguns before, and having shot doubles for over 40 years with never a problem, my expectations were pretty high. My buddy had his new Browning gold gas system jam shooting ducks last week. I really like the SBEII and not quite ready to give up on it yet!