Depends on what range of temperatures you hunt in.
Several of the powders mentioned so far result in different velocities at widely varying temps--which can affect not only accuracy but point of impact. But if you hunt in temps around freezing to 80 or so, just about any modern rifle powder will be pretty consistent.
If your hunting temps vary more, in my experience H4831 or H4831SC usually results in the finest accuracy--and plenty of velocity.
