Need help identifying bullet?

[Diggr_D4]

I am new to relic hunting and my first dig in Cochran GA. I found this bullet in 6-8 in deep and to my surprise --a bullet. I have seen a lot of cavity back bullets from the civil war but most are .57 to .69 range. This bullet is .35 - .36 Caliber and is ~ .725 in length. I cleaned it (probably shouldn't have) and saw the cavity back --wow. If it's a modern bullet I feel stupid. I have been around guns all my life and don't recall a cavity back Please help.

 

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[Davers]

I found the hand poured ball at the bottom of a hill and the rest at the top. About 8-10" deep also. I don't know much about these
View attachment 1274911

Your Round Ball Has the Look IMO , esp, if that flat mark is where the casting Spur was cut off.
What State did u dig these; if you don't mind.

 

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[Tedyoh]

I found the hand poured ball at the bottom of a hill and the rest at the top. About 8-10" deep also. I don't know much about these
View attachment 1274911

The 4 on the bottom all have copper jackets, all 4 of those are modern (post war). That top ball, who knows, that sprue is really large, normally they are cut or trimmed a lot better.....but, maybe there wasn't time for good QC.

 

[Whiplash00]

I found it on my property in Ohio. I live a out in the sticks a few miles from fort laurens and the great trail.