I believe Greener referred to them all as "Twist". He designated between "Plain Twist" & "Damascus Twist". The Twist here would seem to refer to the act of winding it around the mandrel, which was common to both. The Plain was not twisted in the bar prior to winding & is often heard called "Wire Twist" as it gives this appearence. The term Damascus refers to it's having been twisted in the bar producing a pattern other than just the spiral of winding. In the general terminology of the day most gunmakers referred to them simply as "Twist" (plain twist) & "Damascus" (damascus twist) with perhaps some other modifing term as "London Twist" or "Chain Damascus", Star Damascus" etc, etc. Generally speaking I believe the term "Laminated Steel" is ""supposed"" to mean a higher than normal steel content in the mix & can be applied to various patterns. Whether or not the less expensive guns we see with what appears to be plain twist bbls marked laminated steel, actually have that higher percentage is probably open to considerable debate.
