In my 28th year as a cop. 20 in Harlem NYC with a model 10 Smith. Now in Florida with a Glock 23. Never needed to shoot someone but a revolver could never replace my Glock, on patrol. For duty a semi auto ( Glock for me ) is the only handgun for patrol, and off duty, Glock 27. I will always love revolvers, just not for work.