The $100 difference was a little high, but it was at least a 1/3 cheaper than the side lock.
Both 16 gauge Rangers I have from 1937 have 2 9/16" chambers. The one 20 gauge Fulton from 1919 has 2 1/2" chambers. Hunter Arms Co. changed the chamber length for 20 gauges in the early 1930's and the 16 gauge in the late 1930's early 1940's to 2 3/4". I have a 1939 Field Grade 16 ga., the first year for the optional Single Sighting rib that still has 2 9/16" chambers.
The bore sizes also changed in the 16's from .650 to .662 in the 1930's as well.
