Hawk 72 said-I disagree with the Remington 870 as mine failed at the ejector rivet. I was quite surprised after all the hype and testimonials.
I have reasons for the 870 (as I'm sure you have against).
#1-My 870 spent the first five years of it's life laying in the bottom of the boat from before Thanksgiving to February. It was never in any kind of case. Getting stepped on (muddy waders), rained on, and even snow and ice. Once it was rained on then the temp. dropped. To work the action I layed it on the bottom of the lake to thaw the ice. It never skipped a beat.
#2-It gets cleaned every 1 to 2 years, whether it needs it or not.
#3-After being cleaned once, I had a problem with the action sticking. I opened the action, dumped in a handful of dry powdery dirt (with witnesses standing there shaking their head in disbelief). After drying up any oil, I never had another problem out of it that season.
#4-It doubles as one heck of a boat paddle. Saves room and weight in the boat.
#5- I did have one problem with the ejector getting caught up with the bolt (on a dove shoot). I found someone with needle nose pliers on the field. I broke the ejector out, figuring I'd finish the shoot with a single shot. Well it still hasn't been fixed, and functions flawlessly.
I treat this gun like it's a tool. It's been abused more than the average person abuses a hammer. The gun just never stops running. It's not very pretty. It has some pitting where the teflon coating has worn off. The pistol grip of the stock has athletic tape on it so sweaty hands won't slip. There is dry spots of blood on the barrel from finishing off doves and ducks. I could keep going on if I needed to.
After all this bad treatment, the action is much smoother now than when I got it. A Dremel and a grinding wheel, along with polishing compound helped. But the 10,000 plus rounds in 10 years also helped. I have other guns that I shoot. 3 different Franchis, one for ducks, and one for clays and dove, and one for quail. But my hunting buddies know when the old beater comes out, I'm starting to get serious. It has accounted for an untold number of feathered game, and will continue to do so.
Wyman