Fernando Di Leo’s “Milano Calibro 9” is an out-and-out masterpiece of Italian Crime cinema and, in my opinion, one of the most astonishing crime stories ever told. The first film in Di Leo’s excellent ‘Milieu’ trilogy, “Milano Calibro 9” was followed by “La Mala Ordina” (aka. “Manhunt”, also 1972) and the brilliant “Il Boss” (1973). The three films are not connected story-wise,…