Talk:Israeli Navy/@comment-24301892-20141031024237/@comment-27820070-20141031234045

The problem with the speed is that you must have MUCH more momentum inorder for the bullet to even exit the barrel (angling the gun diagonally is NOT a good idea, because that completely lowers the speed of the bullet.) Likewise, even with the most advanced proplusion systems, you have to stick engines into the bullets themselves to ensure that the bullets actually reach orbit (The exosphere is at a whooping 7000 KM and your gun reaches 75 km, meaning that the tip already touches the mesosphere, which is very close to space). Another problem is gravity. Firing the gun diagonally WILL make the bullet face the force of gravity much higher (firing anything upwards+earths gravity=NOT A GREAT COMBINATION.)

Now, I did some minor calculations, and even with the speed of sound, there is another problem: bullet shape. If this is a slug (cylinder), this thing won't be able to achieve the speed of sound, PERIOD (longer time= slower the bullet will get). It WILL have the ability to reach a area where it only needs momentum to propel the bullet, but what ever case it is, by the end of it, thats not going to be THAT hard hitting (by the time it hits a ship like nightmare, it would have lost nearly 50 percent of it's inital velocity and speed. This might cause damage, but not enough that it literally punches through two sets of heavy metal plating.