Take the barrel and action out re torque the screws and then try another scope. Also are you using the rings that come with it I don't like them get you some Talley rings
I have Talley rings. I machined them so that they cover then dovetail like we have seen done here. As note, it's a brand new scope from Doug. I will shoot it tomorrow and then switch to a known 15x target scope and see if it changes anything. Really bums me though.
I am using Fed gold medal match ammo as my test ammo as well as some cheaper stuff like Rem corelokts and Hornandy softpoint ammo. Have not shot any handloads in it.