azmetricnut: 'Tuned up trigger and changed safety'. Does this mean that you just installed a lower safety and tuned the trigger?? If so, you may still have some 'slack' and overtravel that would affect your accuracy and the way to cure that is to install either a Bold Trigger, which is adjustable for trigger pull and let-off, or a Timney trigger.
You also mentioned 'fully bedded' stock and 'stringing' of the loads. If you are stringing it means that something is impacting the barrel as she heats up and that is one of the things that causes stringing. Whenever I bed a rifle to a sporter stock, or to any stock for that matter, I only bed the action and the barrel to as far forward as the end of the chamber, no further. When I am finished with a bedding job, you can run either a dollar bill or a matchbook cover between the barrel and the stock all the way up to the end of the chamber. Then your barrel is 'free-floated', and lots of folks feel that allows for the best accuracy.
If this were mine, now, I would remove the stock and relieve the bedding in the barrel channel up to the end of the chamber. Don't remove it all, just enough to allow that matchbook cover to move freely between stock and barrel all the way up to the chamber. I would then smooth up what is left of the bedding in the barrel channel to protect the wood from moisture and swelling. HTH. Mikey.