Could this be a musket ball?

[cjpoole]

Found it today under an old oak tree. The only other thing go I have found on this site are clad coins from 1967-1978 and old beaver tail pull tabs. Oh, and one broken plow blade.

 

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[Old Dude]

It certainly appears to be one complete with casting sprue. Congrats to you.

 

[cjpoole]

Woo hoo, thanks!

 

[BosnMate]

Yes, you have a muzzle loading firearm projectile. Get an exact measurement and we'll tell you the caliber.