Any idea? It has 3 grooves at the bottom and fired from a straight barrel found in South East Kentucky. It's lead and hit something to bend and smash the tip. Anyone have any ideas. Thanks
Spraking as a civil war relics digger, and dealer, for over 40 years, specializing in Projectiles (bullets and artillery shells), I'll confirm that your bullet is definitely from sometime long-after the end of the civil war. Magnification of your photo shows the bullet's body-grooves ("rings") have multiple tiny parallel lines inside the groove, which is known as a "reeded groove" or "knurled cannelure" -- which did not exist until 1877, and is still being manufactured today. See the photo below, showing a 20th-Century bullet with a "reeded groove/knurled cannelure."
As Ecmjamsit indicted in his reply, the total lack of patina/oxidation on your bullet indicates it is made of 20th-Century "hardened lead," rather than the pure lead bullets in use up to the very-late 1800s.