Replicate custom events to all clients (BP)

I’m trying to get my custom event (turret rotation) to be replicated to all clients. I’m sending my event to the server, but it doesn’t update my other clients. Can anyone explain why this is happening?

Sending out a Multicast from my server event (ServerMoveTurret) sends out the event to all clients again, but that defies the whole authority check procedure, right?