That's turning a lot of dirt with every round! And to think, we used to pull 2-bottom plows. I wonder if those are 16" points?
Amazing machine...now sits about 30 minutes north from here. http://www.heartlandmuseum.org/big-bud.html
I can't remember the max and min settings. About 20 years ago I got to help work on one of those plows or one like it. The plow was able to be adjusted for the width you wanted for each bottom to cut so it could be tuned for the horses of the tractor or if traction control were an issue.