The Optilocks are a little pricey in my opinion ($140). What are you Tikka shooters using if not the Optilocks?

I used Weaver bases with Burris rings on my Whitetail Hunters. I didn't see the need to spend the money for the Optilocks.

Warne makes a set that will fit your Tikka receiver, look great and solid as a rock.

Bought mine from Brownell's. My cost was under $30, retail about $40.