For the turret it depends on exactly what you want. If you just want it to rotate around the yaw and not have the barrel rotate up and down make it one object and have it’s axis be at the center of the main turret, or parent it to a random arrow or something that is itself parented to the tank in your actor and just rotate the arrow if it’s axis is off and you don’t want to bother reimporting it. If you want the barrel to rotate as well make it a separate component of the scene parented to the turret.
For some purposes this will be good enough for what you want then.
Another option for more detailed/accurate aiming is to have the camera perform a line trace out some thousands of units or whatever and whatever it hits you mark that location as target location (or if it doesn’t hit just use the end location for the line trace), and then use find rotation node to get the rotation you want to lerp your turret to so it will point towards whatever the camera looks at, rather than just orienting to the same direction.
