Carl, Yes, there is definitely a mistake (or some confusion) about Ft. Hindman, Kentucky being listed in the 1980 D&G book as the origin of these CS bolts. Ft. Hindman is actually in Arkansas, and there is no Ft. Hindman, Kentucky.
From google; "The Battle of Arkansas Post (also known as Battle of Fort Hindman) was fought from January 9 until 11, 1863, near the mouth of the Arkansas at Arkansas Post, as part of the Vicksburg Campaign of the American Civil War. Although a Union victory, it did not move them any closer to Vicksburg."
I got the bolt from a seller in Benton, Kentucky, yes, but no other provenance was given. His description was; "I believe it is a Confederate 3" Read Solid Bolt shell. Made of iron with 2 bands of lead." I wouldn't be at all surprised if this one was fired in that Arkansas Post/Ft. Hindman battle, but that is pure speculation.