... the guy knew his revolver well. The balistic calculator at:
http://www.handloads.com/calc/
indicates about a 25" drop at 165 yards when the .357 magnum 125 grain JHP is fired at 1400 fps and sighted in at 50 yards. Was weather a factor ? Even a slight breeze at that distance is going to have an effect.
A very lucky shot I'm thinking, or the guy has practiced long range shooting with that revolver a lot and with what it was loaded with. I think the citizen was very, very lucky that the bad guy did not take out the officer and then turn the rifle on the good samaritan. Sometimes you eat the bear, and sometimes the bear eats you. I'm glad it turned out good for the good guys. It sure took a lot of courage on the part of the resident who stepped in with his .357 magnum. My hat is off to him.