The best way to shrink your groups is to start reloading your own ammunition.Even a beginner at reloadingcould easily cut your groupswhen compared to factory ammunition. I recommend lookinginto an RCBS Rock Chucker reloading kit, get a Lymans reloading manual and have fun. Two of the keys to successful reloading are to use quality bullets and the right powder. With your 30-06 an excellent place to start would be Reloader 22 powder and Nosler bullets.