We’ve found an entity “benchmark_artillery_strike” which can provide fixed and cyclical/continuous artillery where it is placed, in mods——without number limit 
I’ll make a detailed instruction several days later about this.
You can also try it yourselves!
Hope this useful. 
Yes, it’s there. But after several shots explosion effects won’t be shown anymore.
Fun fact that all hit marks, as I remember, will form a square instead of circle, which basically means that random spread is x=rand(); and y=rand(); instead of x=rand(); and y=r-x*x;
It’s really a problem. I’m trying to learn it
While cool find, i don’t see how this could not be annoying in-game
I use it to achieve some grand scenes and shoot micro movies.
no matter you want to use it or not 
, by the way I made a little tutorial here
probably y=sqrt(r-x^2)
Yeah, you’re right. Or more like y=rand()%(sqrt(r-x*x)), so y will still be random, but not higher than the border of circle.