Steve Hughes, now there's a name I haven't heard in a century. When Steve first started building muzzleloaders, he had a lot of talent, and virtually no knowledge of wood. He met Ted Smalley at a rendezvous, that Ted, and I, were attending. Ted was the plant manager for Cali'Co Hardwoods, in Windsor California. Ted gave Steve a crash course in evaluating, and grading, wood. Steve built Ted a chiefs grade trade gun from a 30" surplus Green River fowler barrel, and a large Siler lock, that shot like a rifle. He built a beautiful longrifle for Clay Bullen, another Cali'Co employee, and one for Ted's brother Dana. Steve also sold a few kits he manufactured, in our area.
Ted found out that by autoclaving Madrone it lost all its cantankerous properties, and became remarkably free machining. Soon Cali'Co was selling Madrone stocks to many of the major gun manufactures, for their "hardwood stock" lines.
I'm sure Steve got his Madrone stocks, and knowledge from Cali'Co and Ted.
Madrone can mimic Cherry, and Walnut, quite easily. You might want to check that old Weatherby, in the gun safe.
Hungry Horse