Please go to the range and practice before you do adventurism people. Make sure to add in some stress practice because when it comes to actual action your body is going to going into stress hyperdrive.
I think most people severely underestimate it, yeah. I was watching an anime with a British friend the other day, and he referred to an untrained civilian whiffing several close range shots with a pistol as "plot armor" on the part of the character being shot at. And I was just like "buddy you have no idea how hard that shit is" lol I almost went into a rant about how I have missed shots at exactly that range against a bigger target while under no stress and bracing the pistol against a solid object
secret service noticed him before trump got close. I mean he was in range where if he had a clear shot he could maybe have gotten trump, but he was presumably waiting for trump to come closer when the SS started firing at him.