I want to put the Burris tactical rings on a Savage model 16 with the Accutrigger (round rear). I have not used this set-up with these types of rings before, so my question is do I need low, medium, or high, rings to mount a scope with a 40mm-42mm objective? I also need to know which bases that I will need to mount these rings too? I will be using the gun for hunting. I have always used the Leupold STD and Burris Signature "twist-in" style rings, so this is new to me. Any help and advice would be appreciated. Thanks in advance.