I caught the orange man talking on the radio, as I am not american I knew it was going to be something stupid but this? I thought it was a joke, an onion like thing, but nooooo. What sealed it is when in the very speech about the new 100x battleships, trump stated that he did not know why the us stopped using battleships....
It can actually (theoretically) shoot real far away.
As in, when the target area is far enough that the projectile would have slowed down due to drag, long ago and start dropping more than it is going forward.
The problem here, would lie in the stabilisation of the bullet and making sure it actually hits the target instead of a few km away, because faster bullets apparently have a greater difficulty staying on track.