I start out at f/11, 1/250 second, and ISO 200, and bracket 1/2 stops both ways several stops, with the lens manually focused. A solid tripod is a must, too. I use a remote shutter or timed shutter release to help reduce any camera movement.
This one was from last November, and apparently, I forgot to turn down the ISO.
Nikon D750
Focal length 600mm
ISO 400
f/8
1/1600 second
The full Moon may look dramatic, but you can get a lot more surface details with the Moon illuminated from the side.