I've used wood chips (to dispose of them) in my 2300...I load it with normal wood, then dump 1 barn shovel full on top. Burns just fine. Smokes a little more the first time it kicks on, but otherwise, no problem. The chips tend to spread out, and fall into the coals slowly, so it isn't just a mass of chips. I would think a full load of chips wouldn't work, no air flow down...