Not knowing what you have now makes it hard to suggest improvements? Depending on what glass you have most people could stand to upgrade there first. I changed out the stock on mine so I could shoot off a bipod without it affecting my POI. The factory stock has tons of flex in it!! Find a load it likes and really work with your data at various ranges within say 500 yards. Once those become second nature and routinely repeatable then start stretching your shots out further and see if your charts are still on.
I don't think it's worth investing more than a new stock in RA. (I put magpul on mine) By the time you add more upgrades - you are better off buying higher end rifle.