Aiming straight at Earth will never work, no matter the ammo. Because the shooter would have to take into account the time it takes to reach us and the change in the orbital path…so he would need to aim…not accurately, but rather aim calculatingly, quite a bit off.

If the projectile be moving at 2,400 m/s, and it needs to cover 390 000 000 m of distance… well, bring your lunch box, Earth will be long gone

He would also have to take into account the spin of the Moon and the inertial effect on a leaving projectile, making it even more complicated.

THE ONLY BULLET THAT CAN REACH THE EARTH IS ....

The .220 Swift remains the fastest commercial cartridge in the world, with a published velocity of 4,665 ft/s (1,422 m/s) and the escape velocity of the MOON is 2,400 m/s so the bullet will not leave the vicinity of the Moon and will eventually return to the surface.

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The only ballistic (Non missile) round that would leave the moon would be one coming from a rail gun which can reach a velocity of upwards 5–6000 m/s (21,600 km hr).



A railgun Round .

If aimed very accurately which would be very difficult to do it could enter the earth’s atmosphere at a speed in excess of 40,000 km/h or 11,100 m/s .

As the projectile reenters the Earth’s atmosphere it will compress the air ahead of it to a temperature of 8000–10,000ºC and melt and burn up , not striking the ground but vaporizing 15 -20 kilometers above ground maybe terminating in a loud explosion.

What happens to gravitational pull of the earth? As long as the fired bullet could reach the earth surface, e go touch ground.

Acceleration due to free fall, fighting against air resistance would create enough friction that would consume the bullet because it would flame up

FlordFlorez:
What happens to gravitational pull of the earth? As long as the fired bullet could reach the earth surface, e go touch ground.

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