The two sheriff's departments that I served with required Glocks. I was able to carry the Model 20 in 10mm Auto. I used the 200gr black talon load which had a muzzle velocity of about 1050 fps.
NRA Life Member - Orange Gunsite Member - NRA Certified Pistol Instructor
"When plunder becomes a way of life for a group of men living together in society,
they create for themselves in the course of time a legal system that authorizes it and a moral code that justifies it." Frederic Bastiat