Musket Ball....?

[66Fairlane]

So I posted this earlier and surprised I hadn't gotten any ideas. When I first pulled it out I thought it was a musket. Once I got back in the house and started messing with it, I realized it was somewhat hollow. It was for the most part round but looks like half of it is gone. It is definitely lead. Any thoughts on what this could be?

 

Amazon Forum Fav 👍

DR.ÖTEK Metal Detector, Waterproof Gold Detector, Pinpoint & Terrain Modes, Professional Metal Detector - Grab it through Amazon!

[TNGUNS]

Nipple protector for percussion rifle

 

[s.c.shooter]

Possibly an old piece of buckshot or shotgun slug?