Found this about 8" down in a field that was most likely used for agriculture (there's a pile of rocks nearby), it's non-ferrous, I'm not sure what material it is, I haven't tried to clean it yet,, looks to me like part of a flintlock gun maybe
I think you are right, I tried to give a little bending pressure to it to see if I could tell what it was made of and it snapped, and is obviously lead.
So I assume someone was making bullets or sinkers unless there is another application I'm not familiar with. This on a remote part of my land and the only other items I've found are old square nails, shotgun casings and a bullet.. It's just interesting to find out what the land was used for previously .