Warne Low QD rings for the CZ 550. Do they make these any more?
No other scope I know of will clear the occular bell of the working bolt handle except the 2.5X Leupold. It is that low, and perfect with this stock:

Hey Doc!

I always install high see thru rings on my big bores so I can use either the iron sights real close or the scope. It also helps cause I have a really long Giraffe neck and them low rings give me a kink. Don't need much movement in the scope for short range work anyway!

And your big bore is a 45-70 Marlin 1895 SS?
Those are really good with see-thru rings!
A redneck knows perfection in a firearm when he sees it.

The only Marlin I know is Perkins!

Mutual ooooooof Ooooomaha! "This is Marlin Perkins and we're on location on the Nile River and while we watch from the safety of the helicopter above the river - Jim is down below wrestling the gigantic Nile Croc!"