If you think the .30/06 is boring . . .
try shooting from field positions,
then try shooting further from field positions,
try shooting in competition,
try hunting larger game,
try using your .30/06 in self defense drills,
try shooting with iron sights,
try working up loads with components you haven't tried before,
try shooting cast bullet loads,
try small game hunting during the off season,
tape a card with the sight corrections for different loads on the side of the rifle's butt, then try using them, at a variety of ranges, all in one range session,
make up a drop table for your load, then prove the data out to the range at which hitting a 24" target is no longer possible,
stay at it until it is possible,
try shooting at flying clay birds (provided you have an unlimited range to shoot across, mine is called Hudson Bay).
If you enjoy rifle shooting, the possibilities are nearly limitless, but if all you do is shoot groups from the bench at a 100 yard range, yep the .30/06 is boring, along with a bunch of other cartridges.