I have Leupold DDs on my Model 70 300WM. They have worked well. I did not lap them though. I think as long as your rifle was properly drilled and tapped and the receiver heights are correct and obviously the mounts are correct the DD are good to go.The signature rings would be a nice insurance.

They also have a nice clean look.

Figures don't lie, But Liars figure
Assumption is the mother of mistakes