One thing that might aid in achieving that goal is to reapeat the torque of the screws each tme you do so. I am not advocating a particular torque setting just the repeatability of the rifle. I would also consider a possible bed and pillaring job. I have seen vast improvement even on a synthetic by doing this. Some have even seen an improvement in bedding an alluminum framed stock, I have never done this but I do have a H-S that was prviously done and it works fine.