For the sake of argument, let's just hypothesize that ''magical'' was used as an adjective. There is actually plenty of technical data on those rifles on and off the website. Research that's not thorough is not research at all.
The 4/10ths versus the 7/10ths guarantee? Did you actually look at what some of the groups his signature rifles shot were? The ones described in the Field and Stream article were about 1/10-1/15 of an inch center to center!!!! Must be that ''magic.''