Help!Musket ball or something else?

[TheTh3rd]

I am not very knowledgeable when it comes to these things so thanks in advance😀

 

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[TheTh3rd]

I haven't measured it but it weighs around 20grams

 

[TheTh3rd]

If it isn't a musket ball what else could it be?

 

[Fullstock]

It looks like a round ball that was pounded on to flatten it out some, I've found similar round balls in Civil War camps.