Yes, the above means 1 full turn in 16". Take a cleaning rod (ball bearing types seem to work best to allow easy rotation but any will work if handled lightly) and pull a brush through the barrel with a marked spot on the rod near the breech (or muzzle if working from that end). Pull the rod through the barrel until it makes one full rotation. Measure the distance you pulled it. That is the twist rate. Not sure what it is for the above mentioned barrel.