A friend of mine once owned a Browning Hi-Power GP Competition model. It would chew the center out of a target with several different factory- and hand-loads. Phenomenal pistol. I finally had to put it down and step away, or I was going to end up searching high and low for one to make my own.
Close second: I currently own a Glock 34 that shoots pretty well, on the days that my ol' eyes are up to the task.
"Placement is power" -- seen in an article by Stephen A. Camp
(RIP, Mr. Camp; you will be remembered, and missed)