I am trying to figure out how to scope a C in 243 for my young grandsons to use for deer and antelope.

I'd like to keep it light and and close to the barrel and I have a Leupold 2 1/2X 8 36 for it.
My EG has a one piece Redfield base and rings with a Redfield 4X but if I tried to put the Leupold on it the back of the scope would be 1+ forward.

So does anyone make a one piece base/ring like Talley that would mount directly with out using a base? They don't.
If I have to use a base I'd like to use one that's thin and rings that keep the scope back far enough and low but still allow room to reach the safety.
What do you suggest?