Bedding the action can never hurt the accuracy of a rifle...Unless you bed it incorrectly.
As for whether or not to do it...That's a personal choice. If you are just inside of MOA (3/4" groups), and want to try to get the most performance out of the rifle in its current configuration (possibly 1/2" or better), then I would skim-bed the whole action with DevCon, and about 2" in front of the lug where the shank of the barrel rests on the stock...Then free-float the rest of the barrel. If you do decide to bed it, make sure you use a proper release agent on the action and barrel and let it dry, before bedding it in the stock. Also let the rifle sit overnight while letting the bedding set up (12+ hours, 24 is ideal).