I used DNZ on a 338 Win Mag and tightened them 20 in/lbs and the ring screws came loose. The same thing happened when I used their allen key and tightened till the allen key bends a little bit and hold for 8 secs. I had to re-tighten the ring screws plenty of times on the DNZs. Now I use a warne type base and burris sig/ xtr rings. I guess loctite will work but is not advised by DNZ and I needed 20 moa
