Lumberman....Yea walnut suits me great here too.Ash is very very close.Better for higher poundage bows really.Above 60 pounds.Shoot shafts are more time consuming until a person harvests them at the right diameter.That saves some time.Shoot shafts in general are susceptable to warpage a little more than split shafts of douglas fir,walnut,or spruce,but I believe most shoot shafts a tougher in general.Bamboo is some tough stuff too.The other and probably main thing about shoot shafts and bamboo is the natural overall forgiving taper they have for matching bows.
Pat B....I have not tried viburnum or privet yet but am sure I'd like em..Sourwood I have yes.