I found these four in the Gloucester & Sharpness canal. The nail I found near the two swing bridges at Purton, and the others further down towards Sharpness where the old railway bridge collapsed. I thought the mooring hook might come in handy as a rope anchor in places where there's nothing to attach the rope to.
Thanks. A gun would be cool to find but I'd rather not be near unexploded bombs. I don't think it's at all common to find either of those things but that's all that makes the news. I probably pulled out my weight in random scrap just for a few interesting items on this particular trip.
They found a Victorian gun in a pond near me.