Unknown Civil War Bullet

[RelicStalker]

I found a Civil War Bullet that I have never seen before. It has three rings , flat bottom, and the base is much more narrow than typically seen. You can see the smaller size when compared to the standard 3 ringer. Any clues?

 

[TheCannonballGuy]

It is one of several variations of civil war .54 Merrill Carbine bullets. That breechloading rifle was used by both sides in the war, so both sides made Merrill bullets. See bullets #136-140 in the McKee-&-Mason book on civil war bullets. Yours might be bullet #140, a Confederate-made Merrill.