Iv'e had a Remington 870 Express for a few years now. I have only shot it maybe 200 times at most. I went to shoot it again this past weekend, and right after the first shot it jammed very badly. Took me about 5 mins to get the shell out. The next shell did the same thing. I had cleaned the gun a few weeks before that. Was using kind of cheap Winchester bird shot 2 3/4 shells. Before this it would jam, but not as often, but enough to cause me concern. (Maybe 2 out of every 20 shells) My questions is, I have read from quite a few people that polishing the inside of the chamber will elimininate this problem. I have heard that most people will use Scotch Brite pads on a wood dowl and a power drill. Anyone ever do this? How much should I polish it? The inside of the chamber is rather rough. Any other suggestions are welcome. Sorry for the long post.