The easiest way to tell would be to put the new sope on the Tikka if it will clear the barrel with the Tikka mounts. Try running the elevation turret up and down the erector may be stuck. You can also count the clicks and see how much adjustment you have. If you cant zero it on the Tikka the scope is jacked. I usually set the elevation in the middle and get it on paper at 25 yds. Adjust for zero st 25. Then move to 100. Remember it takes 4 times as many clicks at 25 yds. What ammo were you using?