if you aim with your cursor near your character (easy to do with 100% consistency). Seems like all projectiles are there based on how many numbers show. It’s one thing to have many projectiles hit being close to a big monster but this is something else. Because it means it works at an arbitrary range as well.
Can be seen occasionally here in normal gameplay too on Reaper at 00:12.
Could probably make it 100% consistent even in such scenario (melee range) by using Force Move and have perfect control over where the character is aiming.