I have a Remington 870 Express that's fairly new and hasn't been shot much. I took it to the range the other day and shot trap with it. No problems hitting clay pigeons but it is giving me fits with pulling empty shells out of the chamber. The action keeps binding up. Every 3rd or 4th shot when you pull back on the forend the round is in there so tight that it takes two hands to push it back. Before anybody asks I'm using factory winchester universal field shells and I did spray some oil inside the the reciever. Someone told me that I should get one of these flex hones, put it in a drill and hone the chamber. I've shot lots of 870s in my military career and even own three of them. One of thems a wingmaster thats performed flawlessly. I've never seen one do this before. If the honing doesn't work are there any other suggestions? Is this normal for the Express version to have this problem?