I will go ahead and answer another way in case anyone stumbles on this. Best way I found to do this is to create a camera on the weapon itself, then on zoom in your player bp, just use the Set View Target with Blend node and go from the player character to the weapon itself. This way, you can set the FOV of that camera separate from the player camera, relocate and resize, and edit settings such as Distance Blur for the zoom cam where one camera may have different effects from the others. This way, you can also have a different zoom, FOV, blur, and etc… for each weapon.