About 10 years ago, when I was but a poor college student, my girlfriend (who would years later become my wife, but I had no clue of that then) moved away, and had an intruder wake her up in her apartment. She told me of this, and I went to get her a gun. Having very little money (I worked part time as a fry cook at the time), I went to a gun show with $50 in my pocket, and picked up a nasty old grey (there was not one speck of blue left on it) 5-shot Iver Johnson revolver in .38 S&W, with a 3" barrel, cracked brown plastic stocks, and a cylinder that had to be removed by pulling out the center axis pin. I loaded up some backwards-loaded 148g hollow-based lead wadcutters over a little too much Unique powder, in an effort to creat a man-stopper load out of a rather aneomic caliber.
Now, the backwards-loaded LHBWC is a most unstable projectile, and this pistol's fixed sights were mighty rudimentary. But just for fun, I took a seated position at 25 yds, and tried to shoot my best single-action group. To my amazement, the group went under 3"! 4 of the shots were under 2.5"! I was shocked. I went back to 50 yards, and laughed to find that, of the half that hit the paper, all bullets had tumbled, and keyholed. Somewhere around 30 yards, the bullets decided that they wanted to turn around.
But a $50 piece-of-crap turning in <3" groups??!? Who'da thunk it?
(BTW, we still have that old gun, gathering dust and rust.)
