When I started in 1971, we purchased our own revolvers, but in 1973, it was mandated that the department furnish all "safety equipment", so they purchased 600 Model 19's in the 4" configuration.
Two days after being issued a 4" Model 19 to replace my personally owned 6" Model 19, I was shot at by a drunk with a .30-30 Winchester from just a little over 100 yards away. I hadn't even fired the 4" that was just issued to me and didn't have a clue where the sights were set for. I had fired my 6" Model 19 extensively at 100 yards (I worked the desert, with lots of open space) in the past and knew where it hit at that distance, but didn't know where the 4" would hit. After getting behind some good cover and calling for backup from 30 miles away, all I could do was wait him out. After getting some help, he was taken into custody about 5 hours later, without another shot being fired.
Our duty ammunition at that time was Speer Lawman 125 grain JSP. The primers were so hard that about 10% of the rounds wouldn't go off when we shot up our old duty ammunition for qualification once a year. The practice ammunition at that time was 148 grain wadcutters, loaded by the dept. rangemaster. You could almost run to the target faster than those wadcutters got there.
In 1977, I was promoted to Senior Deputy and chosen Dept. Rangemaster and the first thing I did was change the practice ammunition to 158 grain SWC bullets, loaded to full power. The next was change the duty ammunition to Winchester JHP +P 110 grain .38's. I wanted a heavier bullet and .357 Magnum, but County Counsel told the Sheriff that there was no way they would allow it. (I still hate those lawyer weanies in County Counsel)
When Winchester came out with the Silver Tip in .38 Special, we were one of the first departments in the nation to adopt it. It was probably the best duty ammunition in that caliber at the time. I left the range in 1979, when I promoted to Sergeant. The Silver Tip was eventually replaced by the Federal Hydro-Shock in .38 Special.
In 1980, we got a new Sheriff who had been a Captain in the dept. and was a "gun guy". He allowed any handgun (within certain parameters) of 9mm or above. I immediately qualified with my Model 57 .41 Magnum and carried that until a year and a half before I retired, when some training jerk convinced the Sheriff (different Sheriff) that everyone needed to carry the same gun and it should be a (shudder) Glock 22.
Even as a Lieutenant, Captain and Commander, I still carried my Model 57 whenever in uniform, which was most of the time. By the time they converted to the G-22 in 1993, I was in a suit and behind a desk, and ready to retire.
I still have the 6" Model 19 and 6" Model 57. I don't own a Glock..........
Hope this helps.
Fred