Here's my misadventures with an old Stevens 311. I had gotten rid of all my shotguns after my shoulder relacement, believing that I would never fire a shotgun again. Well, a pard showed me a 12 gauge load without recoil. So I went shopping for a cheap used shotgun. I found a 311 and it looked good. It locked up solid and seemed ok. I must have been deafened, because the seller mentioned something about having a gunsmith work on the left lock to get it to cock. I paid the money and began to use it. I even developed a BP load without recoil.
But it was slow reloading. It wanted to close up while I was jamming shells in it. Every now and then the left side didn't cock, but I would take the stock off and it would work fine, even after being put together. So I went to Mauradure's page and looked at the cures for the shutting action. Even Driftwood had a fix there, I tried it, but it didn't quite work, so I decided to change the hammer springs. It took 15 minutes to disassemble the action, and about 11 hours to get it back together. They definitely had some kind of jig at the factory. Everything seemed good to go, then in the next two day match, it doubled on me. Not good with the steel shoulder, light load or not. I took the stock off and decided the left sear should be replaced. Well, there are thousands of right sears available, but not one left sear. I finally gave up in disgust and parted out the 311 for $150 towards a new Stoeger. Promising myself that I would never buy a used gun again.
I remained true to my promise untik December, now I'm trying to get an old Rossi 92 functioning. Who knows, there might be a parts sale soon.