The hunting rifle shown by the big game hunter was a .375 bolt action Holland & Holland rifle. It would not have fired .357 magnum pistol rounds, however.
Oilman Clint Perry drinks bourbon and branch water. This was a topical joke, as it was the preferred drink of another famous Texan, then-President Lyndon Johnson.
Barbara Michaels, who plays Burke's Girl of the Week, previously played the murder victim in "Who Killed My Girl?"
Barbara Michaels also had an unhappy ending as the eponymous character at the beginning of Who Killed the Surf Broad? (1964).
The three roles on Burke's Law (1963) were her only acting credits. She had previously been one of the guests on the Aug 30, 1963 The Tonight Show Starring Johnny Carson (1962).