Rumor has it that John Olin's personal Model 21's were choked with the tighter choke in the right side barrel, and the more open choke in the left- with the single selective trigger, that's OK_ believe his theory was less torque when a righty fires a side-by-side with the left tube being fired first- How would you prove it- The M21- hell for stout- but a Stevens 311 in a 'white sport coat and a pink carnation"-- For WRA to overbuild both their great pumpguns the M1897 (read Madis' book about the 12 gauge '97 that fired Blue pill overloads from 1911 to 1956 in the Armory- never failed- and the M12- if WRA could take a std. field 12 gauge M12 and rechamber it for the 3" Mag (and they did this- a buddy has one with the paperwork to prove it) and it would take the same loads without a whimper as the heavier barreled (and 1/16th" thicker forged receiver) of the M12 heavy Duck gun, what does that tell you?
What it tells me is this- for the die-hard Winchester man- if he were unfortunate enough to only own one shotgun, a 12 gauge M21 with 2 sets of barrels perhaps- then the M21 would shoot into the next two centuries for him and his grandkids- But- if he wanted a better balanced and lighter field double- and used a Model 12 for the waterfowl and turkey hunting, then a fine sidelock DT ejector gun is the gun of choice- just as it was for Captain paul A. Curtis, Art Holland, Nash Buckingham and others-
And retro-fitted choke tubes in a side-by-side (unless some numbnut sawed off the barrels and removed the chokes) is like having the same set of issues some (but not all) SC shooters with Over and blunders have- you missed an easy shot on a quail or a battue- so what's the logical answer- you must have had the wrong choke tube in the gun--
