Have a sendero with a 20moa ken farrel base and med leupold mark4 rings with a mark4 8x25 leupold and all kinds of room.
Have a remington .338lm with a badger 20moa base and their rings.( not sure of the height as they came on the rifle )
and a nightforce 8x32x56 and the bell is so close you have to cut the factory cover to get between the scope and barrel.
Hope this can help you.