Once the action and desired portion of the barrel have been bedded, barrel floated, trigger worked, what other directions can you go in to get better accuracy?

Express,

Recrown, if for nothing else than peace of mind and then load developement.

Malm

Other than brass prep, removing the barrel and truing the action, then screwing on a custom match grade barrel and topping it with a top of the line scope.

If you're shooting for groups, this is a must. If you're accurizing for hunting, none of this will matter nearly as much as time spent practicing shooting from positions normally used in the field.