What these other people were trying to explain, but didn't, is that Smith guns were made on two different frames sizes; a regular/standard sized frame, and a featherweight/smaller version of their gun frame. The regular frame was referred to in factory records as the "R" sized frame, while Hunter referred to their "featherweight" frame as the "FW" frame; and these code designations will be found stamped as a prefix to the serial number on most Smith guns produced after about 1920. However, just because a Smith gun may have a "featherweight" frame does not mean it is a light-weight gun. Hunter made light-weight guns using both frame sizes; so the dealer is correct, the only true way to determine if a Smith gun is light for its bore size is to put the darned thing on a scale. I once owned a Grade 3-E 12-bore built on a FW frame, the gun weighed 6lbs/9oz; that is a light-weight gun for a Smith 12-bore, but you will find many Smith 12-bores on FW frames that will weigh in at 8lbs and over. But Hunter also made light-weight Smith guns using the "R" frame (before the "FW" frame ever went into prodution), and regularly advertised such guns at 6 1/2 pounds. These facts demonstrate why Hunter's designation of their reduced size gun frame as the "featherweight" can be so confusing to the novice collector.