Depends on where you hunt?????...
I've hunted a lot of big woods....northern Minnesota and Wisconsin for starters and I've never found a place I'd have been better off with a 30-30 than a .270....never....there have been times I'd have been just as well armed with the 30-30 due to the density of woods and distance of shots presented and I have great love for the handy short barreled carbines that the 30-30 is usually chambered in .....but there are a few short barreled .270 and 30-06 rifles too that work as well...
I can say that if you did it with a 30-30 then you could have done it with a .270 as well.....but the converse cannot be said.....not even close!