I have never seen a Savage shoot that bad. The first thing I would do, being that you seem inexperienced, is to take the rifle to the local gun shop and have him re-install the scope. Even if it means buying a new set of rings.
Then, before you leave, buy 2 boxes of different ammo (at least). Get rid of that Lead Sled and get some good old sand bags.
When you shoot, be as consistant as you can: location of rifle's forearm on the sand bags, cheek pressure on the stock, grip, etc. Try to keep everything the same.
If you still aren't getting tighter groups, don't have too big an ego to ask someone else with a bit more experience if they would shoot it for you.
Good luck