Confederate more than likely.I found a civil war bullet today with 2 rings. Is it union or confederate?
Enfields do not have rings (except for the rare lubed grooved selma for enfield rifle). A two ring bullet could be anything - need a picture to determine exactly what it is.Two ring is normally an "Enfield", but as stated above a picture is worth a thousand words and would help ID'ing it for you much easier. I have a big Civil War relic guide that I could easily solve this for you if I could see several pictures with different angles