I realize this is a necropost, but I need to tell you guys: There is a luthier's (guitarmaker's) supply house called Stewart-McDonald's,
www.stewmac.com, which sells superglue in graduated thinnesses, specifically for dealing with green-stick breaks like the one in the OP. Let it soak into the crack and clamp the crap out of it-- it has saved more than one gun stock for me. (Why do Savage 24's always split at the wrist even when they aren't being shot?? This stuff has saved at least four of them--) They carry a bunch of clamps and such for fussy little jobs as well. OBTW, this is my first post here-- figures it's in a dead thread--