Storms - depends on "how rough".
Take some pics of the blank, especially the sides showing the sapwood. Some of the experienced eyes may help answer whether the blank is usable.
If you do need to perform exploratory surgery to expose the extent of the sapwood, then maybe a friend with a bandsaw is all that's required. Remember to leave AS MUCH WOOD AS POSSIBLE on the the blank. Every single $&#@ing time (TWICE!!! Two EFFING times!) that I've fired up the bandsaw before inletting I've regretted it - but I got some very nice kindling and plenty of scraps for handgun grips.
Getting a stock "duplicated" or machined is a process unto itself that I don't know much about.
