The projectile continued 7km downrange after punching through a piece of 1/8" steel at 100 yards.
That’s great.
Now, how do you put the projectile on target at 100 to 200 miles? Is your target moving or stationary? How do you guide it in real time? These are not small problems and we don’t yet know whether the rail gun on the JHSV has the power and cooling ability to make the EMRG work.
A demonstration of the EMRG under ideal conditions is one thing, getting it to work is another thing.