Welcome to BGH cbl.
Heck give em a call and ask. 601-432-2400
I wouldn't try and answer that being that I am in Florida, but I would imagine it to mean just that, "private land" as opposed to WMA's , National Forest and State Forest and Parks. Just my opinion though.
What does "gauge" mean anyway? As used here gauge means the number of round lead balls the same diameter as the inside of the barrel (aka the bore) that it would take to weigh one pound. It takes 12 lead balls the same diameter as a 12 gauge barrel to weigh a pound. The smaller 20 gauge would require 20 balls of that barrel diameter. The larger bore 12 gauge would require 12 lead balls of the bore diameter to weigh one pound.
In general the number of pellets in a shotgun shell...