Thank you, Yobuck.
The bases are standard target, NOT Posa. Action is WIN Mod 70, post '64. Barrel is heavy straight taper Obermeyer.
I am aware that spacing is critical for 1/4 MOA. The problem is to get my Unertl optical center to be set at 1000 or 1200yds. Plan to shoot 30-338 ONLY at...