The reason it probably did not pattern well was that they fired it with the 1.wrong make of 3 inch magnum 2.wrong shot size 3. they were lying about firing it. 4. someone fired steel shot from it and screwed up the choking.
Nash would not have had a gun that did not shoot well
Burt Becker would not have sent him a gun that did not shoot well.

Pondoro Taylor,Elmer Keith,Karamojo Bell,and Jeff Cooper knew what they were talking about.