I bought a Optima Elite 50 cal/ 30-06 combo back in the fall. The 50 Cal shoots great but I can't get the 30-06 to group less than 8". Have tried everything. Cheap ammo, premium ammo, 150, 168, 180 gn bullets, Handloads. Nothing works. Changed the scope mounts twice thinking it may be the mounts. Change the scope twice thnking it may be the scopes. Finally put on my Burris from a 300 WSM that drives tacks. Barely can keep it on paper. Anybody have the same problem or any suggestions??