S&W Model 29, 8" barrel. Actually, mine is a 6.5" barrel Dirty Harry gun that I got by accident during the Dirty Harry craze that swept the gun shops way back when. I was working in a cop shop at the time, and the waiting list for M29's was 2-3 years then. A few came in to fill the many backorders and the manager opened one of them up with a ballpoint pen, left a blue trench across the lid of the wooden presentation box. I claimed the damaged unit since any customer who got it would howl and stamp his feet when he saw the box. That was in the early 1970's.
I love the smell of H748 in the morning.....