How many rounds were fired at the columbine massacre?

During the Columbine High School massacre on April 20, 1999, the two shooters, Eric Harris and Dylan Klebold, fired a total of approximately 188 rounds. They used a mix of firearms, including shotguns and a carbine rifle, and their attack resulted in the deaths of 12 students and one teacher, as well as injuries to many others before they took their own lives. The event remains one of the deadliest school shootings in U.S. history.