Found last week on a CW battlefield in VA, this is iron and apparently was part of something larger. I believe part of artillery shell. Measures about 4" tall and 3" in diameter. The metal is about 1/2' thick. It is too thick for a kettle and too thick for a wheel bearing or cast iron stove part. "Knob" on the top and shown on the right pic is just an extra piece of rust. Any idea what type of shell and USA or CSA use?
Please see the other post for another item found nearby.