Anything's possible, but it'll entail a lot of work with a stout press and a really stout bench. Do it in stages, no more than a couple thousandths at a time or you'll really be hating life.
One thing to consider when resizing that dramatically is the accumulation of fins around the base of the bullet. Look closely and if the fin isn't dead even the whole way around you're doing something wrong and creating lopsided bullets. Accuracy will be a sometime thing in that instance. Fins on the base in and of themselves are no friend to accuracy either- a fact proven 110 years ago in Dr. Mann's seminal treatise. The base is the steering end of the bullet after all.
