Wow- thanks, gents- My avoidance of the .410's in any configuration, even a few 42 Winchesters that I have handled, probably has kept my savings account solid- The Hemingway .410 is an L.C. Smith with dt, auto ejectors, 26" barrels- chokes unknown-- and from the fotos in my friend Silvio's second edition of his Hemingway's Guns , like many of his still existing guns extant, sure has been rode hard and put up wet. Both during his years with Pauline in Key West, and later with Martha in Cuba, plus some of them used on the Pilar, well salt water can cause rust, even with his stowing them on the Pilar in sheepskin cases saturated with Fiendoil.
Perhaps the gent who listed this stock set was "guessing" about it being for a 28 gauge-I don't have the fine Brophy book on specs- so a detail of the salient dimensions for the 28" that was a "pre-1913 one-off" would not be applicable. Anyway== if anybody in the group has a spare L.C. Smith cocking tool they would part with, I would appreciate a word. RWTF