Not necessary.Find a one piece picatinny base for your rifle, your mounting problems solved. You'll want high rings for a 50mm optic
Due to the 4-8mm rise of the rail alone, you can often use medium height rings. (I dont know why ultra low profile pic rails are not commonly available).
As it happens, i use mediums on my 56mm scopes (one low) and lows on my 50mm bells.
Pic rails and high rings will likely mean you will be looking for a “chin” weld.