Gregg and Sweeney,
That is a very nice slab and may be a better choice for a gun stock. Even a highly figured stump piece of sugar maple might be a really good choice. I have some burl maple I bought years ago from Cook Woods in Portland Oregon to use for pistol stocks. The slab is very pretty but I can only get 2 small stocks from it because there are many bark inclusions, holes, and punky areas. I also have 2 pistol blanks I bought from Jim Kibler. I am saving them for my big dive (belly flop more likely) into the 17th century. They all are good examples of why it is hard to find solid burl to make a pistol much less a full stock gun, and in each case, I really can only make pistols with the relatively straight profiles common in the 17th century. Also Gregg, burl maple was a European fad for high-end guns during the late 17th and early 18th centuries but the popularity waned. I suspect that is because the supply was small but more importantly, the burl wood could be weak and very prone to cracking. I think a lot of burl stocked firearms were restocked in walnut after they cracked.
dave