His Trojan has a Miller single trigger- not selective, always fired the right hand barrel first. It had the Miller installed when he bought it 30 some years ago, but the slots for the original two triggers are evident in the flooplate I believe. My friend is as "tight as the bark on a elm tree" and if I suggested to him he should maybe send in the non=PGCA membership fee for a research letter, he would look at me as if I suggested that the Detroit Lions will win the Super Bowl 45 next season--
I don't know if, as a paid member, I can sent for a letter for another non-member at the favorable membership price, and so I won't attempt to do this. I do know his Trogan has the flat breech face (as on the M21) and from the few fotos I have seen of the lates' Burton L. Spiller/Bill Tapply VH 20- his shows the same heavy wear and usage-- We haven't done too much grouse hunting in recent years, but back in the late 1970's when we first hooked up in our pursuit of Sir Ruff and Mr. Woodcock- I can recall quite a few days when he took a near limit of each over our Setters and never used the left barrel to do so--
That 20 is the only double he owns- he hunts duck and pheasant with an old 1897 Winchester 12 bore- that's it- But if the old saying about "the one-gun man" is true-- he might have been that prototype--