Brent, Zutz mentioned 1975 twice in the book. The BSS after 1975 were "stamped "'Made in Japan.'" A clue for steel introduction date may be his mention " Some of the first doubles made and advertised for steel shot were Winchester's Model 23 Heavy Duck Gun" and he later mentions Classic Doubles Model 201. "On the lower-priced end, Savage once made a Model 311 Waterfowler with 28-inch barrels choked for steel shot."

I've never shot steel although I'm interested in members' experiences with the older American classics choked IC/Modified. I have a half-dozen-or-so and would like to like to pass them along without worries.