A friend of mine recentlly purchased a Marlin Bolt Action 12 ga "Goose Gun" with a 36" barrel and a gold trigger. He was told the gun was "real old" and "worth a lot of money". It has TWO bulges in the barrel, one about half way up and another about two inches from the end. The clip is broken, the gun is rusty and the flat head screws holding the gun together have obviously been removed. My question- Is this gun 'safe' to shoot? Is it worth fixing? He paid $300 for it and I'm pretty sure he got hosed.