I don't think you'll have much luck with cutting the Hogue stock down. The only suggestion, without having a custom stock, either wood or synthetic, made, which would cost an arm and a leg, not to mention it would not be ready for hunting season, is to find a take off walnut Ruger stock. They're on ebay all the time. Then have it shortened to fit you.
I've been thinking of putting a Hogue on my Ruger .270 and was wondering how heavy they are? Just how long is the length of pull on Hogue stocks?