Hec Ramsey was one of those revolving fourth TV series that comprised the Sunday Mystery Movie on NBC in the 70s. The three permanent franchises that found audience favor were Columbo, McCloud, and McMillan&Wife. During the 70s NBC made several attempts at other series for a fourth.
Hec Ramsey actually lasted two seasons and starred Richard Boone as a former lawman who kept up with the times. If necessary he could still outdraw someone in a gunfight, but he carried with him a portable crime lab and was now versed in ballistics and forensics.
Boone now works for Richard Lenz a police chief in New Providence, Oklahoma who also believes in these things though the two grate on each other. That's how it went in the few episodes of Hec Ramsey.
Boone's character worked in his youth for the famous hanging Judge Parker and so did one Rooster J. Cogburn. If Rooster made it to the turn of the last century, I wonder how he would have adapted.
Hec Ramsey a western that played like a mystery.