I almost, ALMOST, bought a shotgun on another forum (would have had to join just to buy it), but I am unsure of what the expected life of a 12 gauge shotgun is. This was/is a Mossberg 590, with about 600 rounds through it. I know that's nothing for a pistol, but it seems like a lot for a shotgun. So, what is a medium-to-high round count for a 12 gauge? I'm talking a quality shotty, like the 590, or a Remington 870 Express.