Thus far, my pistols have been a Ruger SR9c (double stack), Sig Pro 2022 (double stack), SR22 and Rock Island 1911 (single atacks). Im what I would call combat effective at 10 yds... i can put all rounds in the silhouette (most within at least the seven ring). I just picked up a S&W 3913 today and put 100 rds thru it. Missed the paper more than i have in a LONG time. By the end of the second box, i was consistently on paper bu really all over the place. I do have big hands and this is the slimmest carry piece I own (the SR22 is slimmer but i shoot that better). Would love some input!!