All my carry guns are DAO & I sometimes put one into the bag of SA range guns to stay proficient with it. Yesterday I tried something different. No range guns. Just carry guns. Small, light, snappy DAO guns. Oddly I shot them all better than I ever have. I think what changed is I didn't have to readjust to the trigger. If I shoot a few SA guns then switch to a DA my groups get much bigger. If I start out with DA guns my groups are decent. Did an experiment. Last gun I used was my Ruger LCRX 2" which I was shooting DA. I switched to SA & my groups were the same size. Surprised me.