There's also the dud rate that's a contributing factor here. --- IIRC from a recent article regarding potential DPRK artillery salvo on Seoul the civilian cas

There's also the dud rate that's a contributing factor here. --- IIRC from a recent article regarding potential DPRK artillery salvo on Seoul the civilian casualties are in the tens of thousands. South Korea kind of like Israel have bomb shelters everywhere. So DPRK only has a very limited number of salvos before people realize what's happening and seek cover (also counter-battery fire). IMHO South Korea should have moved their capital a long time ago. They had 50+ years.