Musket Ball and Barrel!

[OwenA]

So today I found another little lead shot in my back woods. I also found what I thought to be just a random metal piece at the time, but after cleaning it off it looks like it could be the barrel to a pistol or musket; whatever shot these little lead balls. A few parts of the sides crumbled off, but this musket ball fits too perfectly. The last picture shows where I think the hammer could've possibly been. Don't really know. I think it's too much of a coincidence that the ball fits perfectly in it