Small cannon balls? Or musket cannon balls?

[Brianbarr88]

Hi, I found these at my mothers thrift store. Somebody donated them along with some other war looking items like books and stuff.
Idk what they are, but when I first seen them I was told they were ball bearings from something but they seem to be something else I think.
Are they cannon balls? Or like musket balls from the war?
Anybody know anything about these or what they might be/were used for?
Thanks.