Looks like the PLA Navy has surpassed the United States Navy in at least one aspect. They now possess and operational and field-able Railgun. United States intelligence confirms this fact.
United States will likely catch up, sooner or later. But it clearly demonstrates that China is inevitably pulling even with the United States in overall technological prowess.
I remember reading a article a couple of decades ago about the US working on rail gun technologies. I will bet that we have one but have chosen not to deploy it.
1: Railgun ammunition is dirt cheap, or will be in the long term.
2: You fire them in an arc not a straight line. Current range is over 100 miles but you can expect that to get higher.
3: You can’t shoot down or viably intercept a railgun round because it’s traveling far too fast. The fireball you mentioned appears in part because of the tremendous velocities involved, anything nearby that’s combustible (dust, or even air) will light up.
4: Because it travels so fast it could probably be used to intercept missiles, again with very cheap ammunition.
5: That ammunition, as a result of being so simple, can be very compact and also safe to store. Logistically you wouldn’t have to resupply as often if using railgun rounds as opposed to missile strikes.
Long-term there’s lots of advantages. Especially when it comes to cost.
They’re mostly dumb rounds, as anything more complex is unlikely to survive the forces involved. Think they’re aiming to get cluster bombs loaded into them though eventually.
Think of it as artillery with a very, very high upper limit on range and a shell that travels at mach 7+. The guidance would be in the aiming .