S&W Model 41

Yes, it's hard to hold a gun one handed and aim through an iPhone held in the other hand...I pulled the trigger on a few spent .22 cases and I have to say the trigger is amazing! (Why empty .22 cases? Since the .22 is a rimfire round, the firing pin comes down on the rim squeezing it between the firing pin and the breechface. If there's nothing between the firing pin and the breechface then it'll hit the breechface. Enough of that and it'll damage one or the other.)