How about people picking up guns, particularly rifles with scopes, or even just iron sights, and just picking them and hitting bulls eyes with no problem? Or picking up some rifle without bothering to zero it before they go into action. And to add to this, every scoped rifle always being zeroed to the exact range that the shooter's target happens to be?
For those not too familiar with firearms, zeroing your sights means that you adjust your sights, or scope, so that when you put your sights or scope on your target at a given range you will (in theory) hit where you're aiming. But this only works for the distance that you've zeroed your weapon at. Soi if you've zeroed your weapon at, say, 100 yards, if you're shooting at something closer or farther than that but have centered your sights on your target, you're not going to hit where you're aiming, your shot will go either high or low, or even off to a side if there's wind. So to hit a target that's closer or further than 100 yards you'll have to aim higher or lower. Yet you almost never see this in movies and TV, with a scope you always see the target lined up directly in the center of the crosshairs, it's even worse when they show fanciers scopes with more than a simple crosshair since those lines are there to help you adjust your point of aim when you're shooting at something at a different range from your zero.