It’s a 30-06. T3 lite stainless with synthetic stock. I’ve tried a number of store bought loads. My best luck so far was with Hornady Superformance 165 grain SST.  Do you have any ammo recommendations?

Thanks for all the advice. I appreciate it. I just found a great deal on a Boyd’s walnut stock, so I’m going to bring the gun to the range and try it with the factory stock and the Boyd’s.  Hopefully the results give me some answers.