i just bought the gun and fired about 50 shells as soon as i bought it. it wasn't cycling factory federal buckshot until about 15-20 rounds in. after that it cycled them fairly well. but it seems to just need breaking in. 3" shells where no issue.
i do have a question though, where does the Oring go on the gun? unless i can't see it, mine only came with one, which wasn't installed.
and dam this gun hobby, it was such an impulse buy! so much so i saw it and left my range, got home, looked it up, and went back!