Considering the number of people who move the sights or have them originaly set forward 11" or whatever, it can hardly be called an old wives tale as it is a fact the the sight picture can be cleared up,changed or whatever you wish to call it. I have done it and it is real, I cannot answer why NO ONE has ever move the sights on a cartridge gun. I have not shot one since my eyesight changed most people I know who use them use scopes or peeps. I am very interested in the research that determined that there has never been a rear sight repositioned on a cartridge gun with an oct barrel, the wide use of buckhorn sights on oct barreled cartrideg guns might influence things,if it is just the fact that one has not been found or seen, I have not seen mars personaly but am content thta it is eally there.I also think there are some surviving MLs with indications that the sights were moved, others may know more of this