🔎 UNIDENTIFIED Musket Ball or Fish Weight?

[Bud-J]

Would this be a ball with the sprue attached (flat bottom?) or maybe a fishing weight. Doesn’t have a split as weights have.
The straight edge at the top is ??

 

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[ColtsPop]

It is a modern bullet

 

[ToddsPoint]

Two different diameters top and bottom. Not a bullet.