Mostly double action, My carry guns don't have spurs. Get S&W 22 revolver and go through a couple bricks of ammo a week until it is a reflex. Many years ago I worked a camp job out in the middle of the bad lands. One week off, one week off days then a week of nights. On nights I would get up every after noon and go out in the sage brush away from camp with a model 18 and go through box after box of 22s. I got ones that came 50 in a cardboard box with a nylon tray. I had those trays scattered all over and would shot the trays from what ever distance I saw them, Always double action. Best thing I ever did to improve my revolver shooting. More than shooting PPC, and it helped my scores in that.