Though Winchester called the straight grip guns "Lightweight", all I've seen differ from the standard 23s only in grip style. I had a so-called LWT 20 ga. that weighed more than 7 lbs. Both standard and LWT U.S. market 23s have 3" chambers. I've never handled a Heavy Duck, and no longer have any old Winchester catalogs around. Anyone know if the Heavy Duck was listed as a heavier gun -- other than a couple ounces for the longer barrels?

Jay