I took my 870 to the range (this is a 870 express I use for sporting clays) over the weekend. I was having several issues with the pump not releasing or being extremely difficult to cycle between shots. (out of 100 plus shots through it, It occurred about 25 times) Now this is a gun I have owned new since 98, cleaned regularly, never any mechanical issues before. I have likely shot 10k rounds through it, and only had it "sticking" like this once or twice over the years. Its only on the rear-ward action immediately after the shot is fired that I am having the issue. It feels like the action is binding, or sticking. A little more horse power breaks it free. Up to now, I have had complete confidence in the action (except for the before mentioned rare occurrence where it acted up). Now, it has created a mild concern for me about reliability as I am about to plunk down some $ for a tactical 870 shotgun. Anyone had this issue? Is there some place I should trouble shoot for solving this issue? Only factory ammo, it was occurring with Federal and Winchester 2 3/4" size 7.5 shot ammo. Quick search didn't reveal anything, although I am certain this must have been discussed before.