Lead

[wheres_wheatie]

I was expecting this to be a lead bullet since every other hole had one in it. This one is a weird teardrop shape.

 

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[SkaBa]

Kinda reminds me of this thread, bottom picture.....

http://www.treasurenet.com/forums/what/461693-very-unusual-cartridge-indian-wars-era.html

 

[relic nut]

I think it is a carved bullet. Sweet

 

[capsmith]

Looks likes it could be a short pour on a pistol bullet.