Terminal velocity is terminal. No way a grain of sand falling straight down cause ANY injury. YOU are disputing thousands of physics lectures going back hundreds of years. Mythbusters spent lots of time on both these myths and found no credible scientific EVIDENCE in either case They are just the latest with electronic transmission. They even revisited the bullet one because of mail pressure from people like you who have a basic understanding of physics.
From WIKI:
As an object accelerates downwards due to gravity, the drag produced by the passing through a fluid medium, (usually air), increases. At a particular speed, the drag force produced will be equal to the downward force, mostly the weight (mg), of the object. Eventually, it plummets at a constant speed called terminal velocity. Terminal velocity varies directly with the ratio of drag to mass. More drag means slower terminal velocity. Increased mass means higher terminal velocity. An object moving downwards at greater than terminal velocity (for example because it was affected by a force downward or it fell from a thinner part of the atmosphere or it changed shape) will slow until it reaches terminal velocity. For example, the terminal velocity of a skydiver in a normal free-fall position with a closed parachute is about 195 km/h (120 mph or 54 m/s). This velocity is the asymptotic limiting value of the acceleration process, since the effective forces on the body more and more closely balance each other as it is approached. In this example, a speed of 50% of terminal velocity is reached after only about 3 seconds, while it takes 8 seconds to reach 90%, 15 seconds to reach 99% and so on.
Now before you call me ignorant again. PROVE IT with scientific EVIDENCE. Where does your physics come from Wal-Mart?
The Daily Oklahoman version contains quotes from many of the people involved, including the grandfather that was with the boy when he was killed by the second shot. The first one hit the water in front of the boat dock they were fishing from. It sounds like the bird house was hanging from a rafter on the outside of the house. The policeman might have been on the porch shooting down or across at it. The pond was downhill from the house.