Man you guys are brave! Ain't no way I'm taking a bolt apart. Personally I'd be asking someone with gunsmithing experience to do that one for me. Good luck for several reasons including re-torquing, etc!
Thats the beauty of Savages. If you have the mechanical ability to change spark plugs in your truck, you can do most anything to a Savage rifle, especially if you become a member over at Savage Shooters. This gets you access to all of the tech articles.
As for changing the bolt handle, place the bolt on the floor on a padded surface. With the bolt face pointing towards you, roll it over so that the bolt handle is facing the left. Now place the correct size allen wrench in the bolt so that it sticks up at a 45 degree angle. Now place your left foot on the bolt body and handle. Place your right foot on the allen. One good bounce on the allen wrench will break the bolt loose.
WARNING if the bolt has never been removed before, it will make a CRACK sound that will make you sure that you broke something. You didn't hurt anything, thats just the sound they make when they let go.