One of my nearest neighbors is an 85 years-young fellow--an ole mountain lion hunter--living at walk-up cabin 5 miles inside the wilderness, who hand crafts exquisite inlaid violin and cello bows. He uses a snakewood frame to get the best sound, and has to get the raw material via Italy these days because of recent import/export restrictions. A single unfinished stick of the stuff, just enough for one bow, is $300, double what it was a few years ago, he mentioned me to last April. (Apparently he knows his stuff, his bows are much prized by fiddlers and cellists. They sell for as much as $3K each). It is so hard and brittle it sometimes breaks if dropped, he tells me.
Harder woods "ring" better. While I don't know that I'd ever pay the big bucks for a snakewood predator call, it sure could be interesting to analyze the frequencies produced by a variety of hardwood calls, to see if there is any practical advantage (and not just an aesthetic one).
LionHo