I have an older 1100 I guess 50's model my grandpa bought it. I can shoot the cheapest anything light load shell in it and it slings them out great a little far even about 5 to 6 feet most times. So I don't understand why both of my brothers in law and 2 uncles have newer 1100s and have to shoot remington shells when shooting dove rounds. I tend to shoot winchester heavy dove because theyre alot cheaper here and have no problem, but if they shoot the winchester heavy dove they will not fully eject the round and the gun jams every shot. I have asked if they are cleaning the gas ports properly and they say they are but this just doesn't seem right to me. I am tempted to clean the gun myself and then try it. Anybody have any input?