Early model troopers had the same or maybe nearly the same lock work as the official police and pythons. They were extremely smooth and light but had a reputation of getting out of time after a lot of shooting.
Maybe around 1970 Colt changed to a more modern, more durable action but it never equaled the older action as far as smooth trigger pull.
I had a trooper mark III in .22LR and it was a good gun but with an action that could not even come close to my old official police .38. It was not as accurate as that old official police either.
Must be. I tried a Trooper at one point. The only thing it had in common with the Python was the name Colt on it. It was decent, but the Python kind of ruins you for other DA wheel guns. That old school hand fitted lock work is sweet.