Copper cap for something

[Sonorguy]

Found this cap thingy out in the woods, near an old camp site, hunters I'm guessing.
any ideas? there is a tiny pin on the shaft part...
also the musket ball (unrelated) has a strange groove on one side, and never dug one so shiny b4, any explanation there?
thanks a bunch!
[attachment 332338 whatitbe2.JPG]
[attachment 332339 whatitb1.JPG]
[attachment 332344 whatitb4.JPG]

 

[Willee - Texas]

I am thinking a Powder Horn valve.

 

[Sonorguy]

Thanks, that's a start maybe. It was deep in beside a very large tree.

 

[copper kidd]

yes the copper cap is off of a powder measure for black powder, the ball is probably more modern I'm guessing a camp of muzzle loader hunters .
Just my thoughts.

 

[Sonorguy]

Cool! thanks guys. I got slammed by two hornets after I dug this. Lost my glasses and detector for awhile in the get away..lol but snuck back around and recovered them after things settled down.

 

[copper kidd]

Those hornets can be a bummer...LOL

 

[riveraiders60]

They dont sting they take chunks! I still have a scar... I crush them.