I bought a mosin and shot it a couple of times, using corrosive ammo. I would clean it with ammonia windex right after shooting. I recently put it away for a while and when I took it out to my horror it looked like this all over the bolt: I assume this is because I didn't clean it properly from using corrosive ammo, but how can I fix it? Is it toast and I should be getting a new bolt? I tried searching,, but all I found was how to clean it after shooting corrosive ammo before it gets messed up. Thank you for your help in advance.