Another challenge

[Arrow1492]

Here is another good one. Only 1/4 present but it’s got the base, side notch and some flaking details. Base is ground smooth. For some reason, not all pics are uploading upright, but the notch is on the lower left. Turn it clockwise one quarter turn. It’s thick, like a bullet.
From Illinois. Any ideas?

 

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[ToddsPoint]

Thick like a bullet? Maybe an IL bullet point. Also called Matanzas. Gary

 

[Rookster]

Nice find.

 

[DoctorJones]

It's a punch/drill. Have found many almost identical to it... Nice find!