I have a Mossburg 500 and while overall I have been happy with the way it shoots, I have had problems with the shells ejecting. Especially when shooting for squirrels up in the trees. Someone has said that it could possibly be me not working the pump hard enough, but I have made a concerted effort to do this recently and it still hasn't helped too much. I also have had no problems with any other pump shotguns. Just my experiences. If anyone has any ideas on my problem I would love to hear them and possibly be able to give these guns my full fledged endorsement.