Originally Posted by Flint Rock
There is a down side to the Python's tight fit. My Python (1981 vintage), after 20 to 25 quick rounds, will refuse to function in double action. The parts heat up and expand and you can't reasonably pull the trigger
. You either have to let the gun cool or go single action.
Thinking more about your Python; I've seen several new Pythons do the same as your's. One thing which might cause this to happen is when metal shavings or foreign matter gets into the lock work. Removing the side plate will tell more. Another is when the crane retaining screw backs out of the frame or the extractor rod becomes loose. You really need to check it out because these revolvers were made for PPC right out of the box.