Moly coated bullets on rifle bullets is not the same stuff as cast pistol bullets. I tried it when I shot High Power, saw no advantage, it required more powder for the same velocity due to the reduction of pressure due to the coating.
Hornady does not make a 62 grain FMJ. If you want small groups use match bullets, or varmint bullets, such as V-Max, Ballistic Tips or Blitz King.