Well I know how to test a 12 ga choke with a dime but I don't know about a 16 ga. I found a "F" stamped on the side of the underlug. I assume that means full choke. If you put a dime in the end of the barrel with Roosevelt's head first, it covers the top of his head about like a hat would. Dosen't quite reach his ears.
Also, "Simmons Gun Specialties Inc. Olathe, Kansas" is stamped on the left side of the vent rib. Does anyone else have this on the side of their vent rib?