Orange they want to make bullets so fast so that the shooter does not have to lead the target or compensate for bullet drop at high distances

Well they still do have to "lead" the target in a way, it's not like the second you raise your aim you got the target pin-pointed. This just takes some prediction off. Also I don't think bullet drop is really that big of an issue.. at least with the right equipment.

How could a scramjet bullet fire 7 kilometers? Wouldn't the Coriolis effect and wind still be major factors? They would have to have a tiny computer chip inside each one. :0

Also, it's pretty obviously that no one but Inri (ugh I hate agreeing with Inri) knows anything about how bullets work at long distances. Bullets go nowhere you expect them to at even ranges of 500 meters+ unless you are a trained sniper. Like, some people think hitting a target is as easy as picking up a gun and aiming the scope's crosshairs at it, but it's really, really not.

Anyways, they already have something similar in regular operational use. The KEM (Kinetic Energy Missile) is a computer guided missile with no warhead that is not very large. About three times the length of a 12.7mm anti-material slug. When a KEM hits something, it hits it with significant enough force (and mass, because it is so much larger than a 12.7 (.50 cal) round) that it can literally destroy a jeep upon impact. Like, not just bang it up or damage it, but sever it in half and throw both those halves a couple meters.