My daughter was born at the end of hunting season a couple years ago. In all the commotion my Disc Extreme got put away loaded (no primer) and I kind of forgot about it for almost a year. It hadn't been fired. When I pushed the load through it looked as good as it did before. Still shot fine too.
I would say it depends on the climate and if it was put away loaded on a clean bore or not. Either way, even if the barrel is ruined, if everything else is in good shape I would say it's still a decent deal. Put a Bergara barrel on there and you're still going to be getting basically a free scope.