Mesh what you trying to say.
He's pointing out that this is the real world, not some B-movie or video game where you line up your crosshairs with a target, pull the trigger, and get a kill. In the real world we are subject to this thing known as "physics".
The physics of putting a chunk of metal into
even a stationary target that's 3 miles away are ridiculously complex. The "power of the gun" is the least of the factors. Just because it can launch the projectile to that distance doesn't mean it's even remotely possible to do so with any semblance of accuracy.
...For example, even the tiniest variation in windspeed during the ~5-second travel time of the bullet will adjust its course significantly, and since air-turbulence is inherently chaotic this is not something you can possibly account for. In short, even two
identical bullets, fired one after the other from the same gun, on an
identical trajectory (which is, again, impossible to achieve in practice) would not hit the same location.
On top this you need to account for the rise and fall of the bullet during its travel (bullets don't travel "in a straight line" no matter how fast they are ejected from the barrel of a gun), the curvature and rotation of the earth, and local atmospheric conditions (temperature, humidity etc). Oh, and the small matter of
your target moving during the 5 seconds that the bullet is in flight.
But whatever. Carry on living in your "Call of Duty" fantasy-land where you just pick up a massive gun, aim it at your target, and get a 3-mile kill. It's clear to anyone with even a basic understanding of physics that you know nothing about sniping, or the use of guns in the real world.
BOOM HEADSHOT!
