I have most of MM's books, a really a big fan of his writing. But one time I found he missed the mark, when writing of muzzle flip with SxSs in the context of gun fitting. He advised that stock modifications for a properly fit SxS should allow for muzzle flip by putting the point of impact above the point of aim. Left me scratching my head, wondering why muzzle flip would take a vacation when shooting at the pattern plate, but come back home to lower the pattern to point of aim when shooting birds or targets.
Jay